mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 20:42:30 +01:00
37d353770f
Merge from mysql-5.6:
revno: 3257
committer: Jon Olav Hauglid <jon.hauglid@oracle.com>
branch nick: mysql-trunk-bug11756966
timestamp: Thu 2011-07-14 09:32:01 +0200
message:
Bug#11756966 - 48958: STORED PROCEDURES CAN BE LEVERAGED TO BYPASS
DATABASE SECURITY
The problem was that CREATE PROCEDURE/FUCTION could be used to
check the existence of databases for which the user had no
privileges and therefore should not be allowed to see.
The reason was that existence of a given database was checked
before privileges. So trying to create a stored routine in
a non-existent database would give a different error than trying
to create a stored routine in a restricted database.
This patch fixes the problem by changing the order of the checks
for CREATE PROCEDURE/FUNCTION so that privileges are checked first.
This means that trying to create a stored routine in a
non-existent database and in a restricted database both will
give ER_DBACCESS_DENIED_ERROR error.
Test case added to grant.test.
2029 lines
83 KiB
Text
2029 lines
83 KiB
Text
DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5;
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DROP VIEW IF EXISTS v1;
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show variables where variable_name like "skip_show_database";
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Variable_name Value
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skip_show_database OFF
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grant select, update, execute on test.* to mysqltest_2@localhost;
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grant select, update on test.* to mysqltest_1@localhost;
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create user mysqltest_3@localhost;
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create user mysqltest_3;
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select * from information_schema.SCHEMATA where schema_name > 'm';
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CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH
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def mtr latin1 latin1_swedish_ci NULL
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def mysql latin1 latin1_swedish_ci NULL
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def performance_schema utf8 utf8_general_ci NULL
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def test latin1 latin1_swedish_ci NULL
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select schema_name from information_schema.schemata;
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schema_name
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information_schema
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mtr
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mysql
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performance_schema
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test
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show databases like 't%';
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Database (t%)
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test
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show databases;
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Database
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information_schema
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mtr
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mysql
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performance_schema
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test
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show databases where `database` = 't%';
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Database
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create database mysqltest;
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create table mysqltest.t1(a int, b VARCHAR(30), KEY string_data (b));
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create table test.t2(a int);
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create table t3(a int, KEY a_data (a));
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create table mysqltest.t4(a int);
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create table t5 (id int auto_increment primary key);
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insert into t5 values (10);
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create view v1 (c) as
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SELECT table_name FROM information_schema.TABLES
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WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') AND
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table_name not like 'ndb_%' AND table_name not like 'innodb_%' AND
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table_name not like 'xtradb_%';
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select * from v1;
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c
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ALL_PLUGINS
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APPLICABLE_ROLES
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CHARACTER_SETS
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CLIENT_STATISTICS
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COLLATIONS
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COLLATION_CHARACTER_SET_APPLICABILITY
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|
COLUMNS
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|
COLUMN_PRIVILEGES
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|
ENABLED_ROLES
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|
ENGINES
|
|
EVENTS
|
|
FILES
|
|
GLOBAL_STATUS
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|
GLOBAL_VARIABLES
|
|
INDEX_STATISTICS
|
|
KEY_CACHES
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|
KEY_COLUMN_USAGE
|
|
PARAMETERS
|
|
PARTITIONS
|
|
PLUGINS
|
|
PROCESSLIST
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|
PROFILING
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|
REFERENTIAL_CONSTRAINTS
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|
ROUTINES
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|
SCHEMATA
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|
SCHEMA_PRIVILEGES
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SESSION_STATUS
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SESSION_VARIABLES
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|
STATISTICS
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|
TABLES
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TABLESPACES
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TABLE_CONSTRAINTS
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TABLE_PRIVILEGES
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TABLE_STATISTICS
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TRIGGERS
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USER_PRIVILEGES
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USER_STATISTICS
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|
VIEWS
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|
column_stats
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|
columns_priv
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|
db
|
|
event
|
|
func
|
|
general_log
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|
gtid_slave_pos
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|
help_category
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|
help_keyword
|
|
help_relation
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|
help_topic
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|
host
|
|
index_stats
|
|
plugin
|
|
proc
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|
procs_priv
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|
proxies_priv
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|
roles_mapping
|
|
servers
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|
slow_log
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|
t1
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t2
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|
t3
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|
t4
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|
t5
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|
table_stats
|
|
tables_priv
|
|
time_zone
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|
time_zone_leap_second
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|
time_zone_name
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|
time_zone_transition
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|
time_zone_transition_type
|
|
user
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|
v1
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select c,table_name from v1
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inner join information_schema.TABLES v2 on (v1.c=v2.table_name)
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where v1.c like "t%";
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c table_name
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TABLES TABLES
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TABLESPACES TABLESPACES
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|
TABLE_CONSTRAINTS TABLE_CONSTRAINTS
|
|
TABLE_PRIVILEGES TABLE_PRIVILEGES
|
|
TABLE_STATISTICS TABLE_STATISTICS
|
|
TRIGGERS TRIGGERS
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|
table_stats table_stats
|
|
tables_priv tables_priv
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time_zone time_zone
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|
time_zone_leap_second time_zone_leap_second
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|
time_zone_name time_zone_name
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|
time_zone_transition time_zone_transition
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time_zone_transition_type time_zone_transition_type
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t1 t1
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t4 t4
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t2 t2
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t3 t3
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t5 t5
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select c,table_name from v1
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left join information_schema.TABLES v2 on (v1.c=v2.table_name)
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where v1.c like "t%";
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c table_name
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TABLES TABLES
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TABLESPACES TABLESPACES
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|
TABLE_CONSTRAINTS TABLE_CONSTRAINTS
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|
TABLE_PRIVILEGES TABLE_PRIVILEGES
|
|
TABLE_STATISTICS TABLE_STATISTICS
|
|
TRIGGERS TRIGGERS
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|
table_stats table_stats
|
|
tables_priv tables_priv
|
|
time_zone time_zone
|
|
time_zone_leap_second time_zone_leap_second
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|
time_zone_name time_zone_name
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|
time_zone_transition time_zone_transition
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|
time_zone_transition_type time_zone_transition_type
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t1 t1
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t4 t4
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t2 t2
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t3 t3
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t5 t5
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select c, v2.table_name from v1
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right join information_schema.TABLES v2 on (v1.c=v2.table_name)
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where v1.c like "t%";
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c table_name
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TABLES TABLES
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|
TABLESPACES TABLESPACES
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|
TABLE_CONSTRAINTS TABLE_CONSTRAINTS
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|
TABLE_PRIVILEGES TABLE_PRIVILEGES
|
|
TABLE_STATISTICS TABLE_STATISTICS
|
|
TRIGGERS TRIGGERS
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|
table_stats table_stats
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|
tables_priv tables_priv
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|
time_zone time_zone
|
|
time_zone_leap_second time_zone_leap_second
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|
time_zone_name time_zone_name
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|
time_zone_transition time_zone_transition
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|
time_zone_transition_type time_zone_transition_type
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t1 t1
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t4 t4
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t2 t2
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t3 t3
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t5 t5
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select table_name from information_schema.TABLES
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where table_schema = "mysqltest" and table_name like "t%";
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table_name
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t1
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t4
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select * from information_schema.STATISTICS where TABLE_SCHEMA = "mysqltest";
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TABLE_CATALOG TABLE_SCHEMA TABLE_NAME NON_UNIQUE INDEX_SCHEMA INDEX_NAME SEQ_IN_INDEX COLUMN_NAME COLLATION CARDINALITY SUB_PART PACKED NULLABLE INDEX_TYPE COMMENT INDEX_COMMENT
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def mysqltest t1 1 mysqltest string_data 1 b A NULL NULL NULL YES BTREE
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show keys from t3 where Key_name = "a_data";
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
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t3 1 a_data 1 a A NULL NULL NULL YES BTREE
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show tables like 't%';
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Tables_in_test (t%)
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t2
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t3
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t5
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show table status;
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Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
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t2 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
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t3 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
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t5 MyISAM 10 Fixed 1 7 7 # 2048 0 11 # # NULL latin1_swedish_ci NULL
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v1 NULL NULL NULL NULL NULL NULL # NULL NULL NULL # # NULL NULL NULL NULL VIEW
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show full columns from t3 like "a%";
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Field Type Collation Null Key Default Extra Privileges Comment
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a int(11) NULL YES MUL NULL select,insert,update,references
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show full columns from mysql.db like "Insert%";
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Field Type Collation Null Key Default Extra Privileges Comment
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Insert_priv enum('N','Y') utf8_general_ci NO N select,insert,update,references
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show full columns from v1;
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Field Type Collation Null Key Default Extra Privileges Comment
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c varchar(64) utf8_general_ci NO select,insert,update,references
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select * from information_schema.COLUMNS where table_name="t1"
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and column_name= "a";
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TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION COLUMN_DEFAULT IS_NULLABLE DATA_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE DATETIME_PRECISION CHARACTER_SET_NAME COLLATION_NAME COLUMN_TYPE COLUMN_KEY EXTRA PRIVILEGES COLUMN_COMMENT
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def mysqltest t1 a 1 NULL YES int NULL NULL 10 0 NULL NULL NULL int(11) select,insert,update,references
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show columns from mysqltest.t1 where field like "%a%";
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Field Type Null Key Default Extra
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a int(11) YES NULL
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create view mysqltest.v1 (c) as select a from mysqltest.t1;
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grant select (a) on mysqltest.t1 to mysqltest_2@localhost;
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grant select on mysqltest.v1 to mysqltest_3;
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select table_name, column_name, privileges from information_schema.columns
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where table_schema = 'mysqltest' and table_name = 't1';
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table_name column_name privileges
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t1 a select
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show columns from mysqltest.t1;
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Field Type Null Key Default Extra
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a int(11) YES NULL
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select table_name, column_name, privileges from information_schema.columns
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where table_schema = 'mysqltest' and table_name = 'v1';
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table_name column_name privileges
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v1 c select
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explain select * from v1;
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ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table
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drop view v1, mysqltest.v1;
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drop tables mysqltest.t4, mysqltest.t1, t2, t3, t5;
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drop database mysqltest;
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select * from information_schema.CHARACTER_SETS
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where CHARACTER_SET_NAME like 'latin1%';
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CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
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latin1 latin1_swedish_ci cp1252 West European 1
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SHOW CHARACTER SET LIKE 'latin1%';
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Charset Description Default collation Maxlen
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latin1 cp1252 West European latin1_swedish_ci 1
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SHOW CHARACTER SET WHERE charset like 'latin1%';
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Charset Description Default collation Maxlen
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latin1 cp1252 West European latin1_swedish_ci 1
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select * from information_schema.COLLATIONS
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where COLLATION_NAME like 'latin1%';
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COLLATION_NAME CHARACTER_SET_NAME ID IS_DEFAULT IS_COMPILED SORTLEN
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latin1_german1_ci latin1 5 # 1
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latin1_swedish_ci latin1 8 Yes # 1
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latin1_danish_ci latin1 15 # 1
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latin1_german2_ci latin1 31 # 2
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latin1_bin latin1 47 # 1
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latin1_general_ci latin1 48 # 1
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latin1_general_cs latin1 49 # 1
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latin1_spanish_ci latin1 94 # 1
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SHOW COLLATION LIKE 'latin1%';
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Collation Charset Id Default Compiled Sortlen
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latin1_german1_ci latin1 5 # 1
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latin1_swedish_ci latin1 8 Yes # 1
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latin1_danish_ci latin1 15 # 1
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|
latin1_german2_ci latin1 31 # 2
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|
latin1_bin latin1 47 # 1
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|
latin1_general_ci latin1 48 # 1
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|
latin1_general_cs latin1 49 # 1
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|
latin1_spanish_ci latin1 94 # 1
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SHOW COLLATION WHERE collation like 'latin1%';
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|
Collation Charset Id Default Compiled Sortlen
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latin1_german1_ci latin1 5 # 1
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latin1_swedish_ci latin1 8 Yes # 1
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|
latin1_danish_ci latin1 15 # 1
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|
latin1_german2_ci latin1 31 # 2
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|
latin1_bin latin1 47 # 1
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|
latin1_general_ci latin1 48 # 1
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latin1_general_cs latin1 49 # 1
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latin1_spanish_ci latin1 94 # 1
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select * from information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
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|
where COLLATION_NAME like 'latin1%';
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|
COLLATION_NAME CHARACTER_SET_NAME
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|
latin1_german1_ci latin1
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|
latin1_swedish_ci latin1
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|
latin1_danish_ci latin1
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|
latin1_german2_ci latin1
|
|
latin1_bin latin1
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|
latin1_general_ci latin1
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latin1_general_cs latin1
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latin1_spanish_ci latin1
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drop procedure if exists sel2;
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drop function if exists sub1;
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drop function if exists sub2;
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create function sub1(i int) returns int
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return i+1;
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create procedure sel2()
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begin
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select * from t1;
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select * from t2;
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end|
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select parameter_style, sql_data_access, dtd_identifier
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from information_schema.routines where routine_schema='test';
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parameter_style sql_data_access dtd_identifier
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SQL CONTAINS SQL NULL
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SQL CONTAINS SQL int(11)
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show procedure status where db='test';
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|
Db Name Type Definer Modified Created Security_type Comment character_set_client collation_connection Database Collation
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test sel2 PROCEDURE root@localhost # # DEFINER latin1 latin1_swedish_ci latin1_swedish_ci
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show function status where db='test';
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Db Name Type Definer Modified Created Security_type Comment character_set_client collation_connection Database Collation
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test sub1 FUNCTION root@localhost # # DEFINER latin1 latin1_swedish_ci latin1_swedish_ci
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select a.ROUTINE_NAME from information_schema.ROUTINES a,
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information_schema.SCHEMATA b where
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a.ROUTINE_SCHEMA = b.SCHEMA_NAME AND b.SCHEMA_NAME='test';
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|
ROUTINE_NAME
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sel2
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|
sub1
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explain select a.ROUTINE_NAME from information_schema.ROUTINES a,
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information_schema.SCHEMATA b where
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a.ROUTINE_SCHEMA = b.SCHEMA_NAME;
|
|
id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE # ALL NULL NULL NULL NULL NULL
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1 SIMPLE # ALL NULL NULL NULL NULL NULL Using where; Using join buffer (flat, BNL join)
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select a.ROUTINE_NAME, b.name from information_schema.ROUTINES a,
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mysql.proc b where a.ROUTINE_NAME = convert(b.name using utf8) AND a.ROUTINE_SCHEMA='test' order by 1;
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ROUTINE_NAME name
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sel2 sel2
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sub1 sub1
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select count(*) from information_schema.ROUTINES where routine_schema='test';
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count(*)
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2
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create view v1 as select routine_schema, routine_name from information_schema.routines where routine_schema='test'
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order by routine_schema, routine_name;
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select * from v1;
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routine_schema routine_name
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test sel2
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test sub1
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drop view v1;
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select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
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ROUTINE_NAME ROUTINE_DEFINITION
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show create function sub1;
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|
ERROR 42000: FUNCTION sub1 does not exist
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select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
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|
ROUTINE_NAME ROUTINE_DEFINITION
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sel2 NULL
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sub1 NULL
|
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grant all privileges on test.* to mysqltest_1@localhost;
|
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select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
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|
ROUTINE_NAME ROUTINE_DEFINITION
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|
sel2 NULL
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|
sub1 NULL
|
|
create function sub2(i int) returns int
|
|
return i+1;
|
|
select ROUTINE_NAME, ROUTINE_DEFINITION from information_schema.ROUTINES;
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|
ROUTINE_NAME ROUTINE_DEFINITION
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|
sel2 NULL
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|
sub1 NULL
|
|
sub2 return i+1
|
|
show create procedure sel2;
|
|
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
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|
sel2 NULL latin1 latin1_swedish_ci latin1_swedish_ci
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|
show create function sub1;
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|
Function sql_mode Create Function character_set_client collation_connection Database Collation
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|
sub1 NULL latin1 latin1_swedish_ci latin1_swedish_ci
|
|
show create function sub2;
|
|
Function sql_mode Create Function character_set_client collation_connection Database Collation
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|
sub2 CREATE DEFINER=`mysqltest_1`@`localhost` FUNCTION `sub2`(i int) RETURNS int(11)
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|
return i+1 latin1 latin1_swedish_ci latin1_swedish_ci
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|
show function status like "sub2";
|
|
Db Name Type Definer Modified Created Security_type Comment character_set_client collation_connection Database Collation
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|
test sub2 FUNCTION mysqltest_1@localhost # # DEFINER latin1 latin1_swedish_ci latin1_swedish_ci
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|
drop function sub2;
|
|
show create procedure sel2;
|
|
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
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|
sel2 CREATE DEFINER=`root`@`localhost` PROCEDURE `sel2`()
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|
begin
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|
select * from t1;
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|
select * from t2;
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|
end latin1 latin1_swedish_ci latin1_swedish_ci
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|
create view v0 (c) as select schema_name from information_schema.schemata;
|
|
select * from v0;
|
|
c
|
|
information_schema
|
|
mtr
|
|
mysql
|
|
performance_schema
|
|
test
|
|
explain select * from v0;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE # ALL NULL NULL NULL NULL NULL
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|
create view v1 (c) as select table_name from information_schema.tables
|
|
where table_name="v1";
|
|
select * from v1;
|
|
c
|
|
v1
|
|
create view v2 (c) as select column_name from information_schema.columns
|
|
where table_name="v2";
|
|
select * from v2;
|
|
c
|
|
c
|
|
create view v3 (c) as select CHARACTER_SET_NAME from information_schema.character_sets
|
|
where CHARACTER_SET_NAME like "latin1%";
|
|
select * from v3;
|
|
c
|
|
latin1
|
|
create view v4 (c) as select COLLATION_NAME from information_schema.collations
|
|
where COLLATION_NAME like "latin1%";
|
|
select * from v4;
|
|
c
|
|
latin1_german1_ci
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|
latin1_swedish_ci
|
|
latin1_danish_ci
|
|
latin1_german2_ci
|
|
latin1_bin
|
|
latin1_general_ci
|
|
latin1_general_cs
|
|
latin1_spanish_ci
|
|
show keys from v4;
|
|
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
|
|
select * from information_schema.views where TABLE_NAME like "v%";
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
|
|
def test v0 select `information_schema`.`schemata`.`SCHEMA_NAME` AS `c` from `information_schema`.`schemata` NONE NO root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v1 select `information_schema`.`tables`.`TABLE_NAME` AS `c` from `information_schema`.`tables` where (`information_schema`.`tables`.`TABLE_NAME` = 'v1') NONE NO root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v2 select `information_schema`.`columns`.`COLUMN_NAME` AS `c` from `information_schema`.`columns` where (`information_schema`.`columns`.`TABLE_NAME` = 'v2') NONE NO root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v3 select `information_schema`.`character_sets`.`CHARACTER_SET_NAME` AS `c` from `information_schema`.`character_sets` where (`information_schema`.`character_sets`.`CHARACTER_SET_NAME` like 'latin1%') NONE NO root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v4 select `information_schema`.`collations`.`COLLATION_NAME` AS `c` from `information_schema`.`collations` where (`information_schema`.`collations`.`COLLATION_NAME` like 'latin1%') NONE NO root@localhost DEFINER latin1 latin1_swedish_ci
|
|
drop view v0, v1, v2, v3, v4;
|
|
create table t1 (a int);
|
|
grant select,update,insert on t1 to mysqltest_1@localhost;
|
|
grant select (a), update (a),insert(a), references(a) on t1 to mysqltest_1@localhost;
|
|
grant all on test.* to mysqltest_1@localhost with grant option;
|
|
select * from information_schema.USER_PRIVILEGES where grantee like '%mysqltest_1%';
|
|
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
|
|
'mysqltest_1'@'localhost' def USAGE NO
|
|
select * from information_schema.SCHEMA_PRIVILEGES where grantee like '%mysqltest_1%';
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
|
|
'mysqltest_1'@'localhost' def test SELECT YES
|
|
'mysqltest_1'@'localhost' def test INSERT YES
|
|
'mysqltest_1'@'localhost' def test UPDATE YES
|
|
'mysqltest_1'@'localhost' def test DELETE YES
|
|
'mysqltest_1'@'localhost' def test CREATE YES
|
|
'mysqltest_1'@'localhost' def test DROP YES
|
|
'mysqltest_1'@'localhost' def test REFERENCES YES
|
|
'mysqltest_1'@'localhost' def test INDEX YES
|
|
'mysqltest_1'@'localhost' def test ALTER YES
|
|
'mysqltest_1'@'localhost' def test CREATE TEMPORARY TABLES YES
|
|
'mysqltest_1'@'localhost' def test LOCK TABLES YES
|
|
'mysqltest_1'@'localhost' def test EXECUTE YES
|
|
'mysqltest_1'@'localhost' def test CREATE VIEW YES
|
|
'mysqltest_1'@'localhost' def test SHOW VIEW YES
|
|
'mysqltest_1'@'localhost' def test CREATE ROUTINE YES
|
|
'mysqltest_1'@'localhost' def test ALTER ROUTINE YES
|
|
'mysqltest_1'@'localhost' def test EVENT YES
|
|
'mysqltest_1'@'localhost' def test TRIGGER YES
|
|
select * from information_schema.TABLE_PRIVILEGES where grantee like '%mysqltest_1%';
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'mysqltest_1'@'localhost' def test t1 SELECT NO
|
|
'mysqltest_1'@'localhost' def test t1 INSERT NO
|
|
'mysqltest_1'@'localhost' def test t1 UPDATE NO
|
|
select * from information_schema.COLUMN_PRIVILEGES where grantee like '%mysqltest_1%';
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'mysqltest_1'@'localhost' def test t1 a SELECT NO
|
|
'mysqltest_1'@'localhost' def test t1 a INSERT NO
|
|
'mysqltest_1'@'localhost' def test t1 a UPDATE NO
|
|
'mysqltest_1'@'localhost' def test t1 a REFERENCES NO
|
|
delete from mysql.user where user like 'mysqltest%';
|
|
delete from mysql.db where user like 'mysqltest%';
|
|
delete from mysql.tables_priv where user like 'mysqltest%';
|
|
delete from mysql.columns_priv where user like 'mysqltest%';
|
|
flush privileges;
|
|
drop table t1;
|
|
create table t1 (a int null, primary key(a));
|
|
alter table t1 add constraint constraint_1 unique (a);
|
|
alter table t1 add constraint unique key_1(a);
|
|
Warnings:
|
|
Note 1831 Duplicate index 'key_1' defined on the table 'test.t1'. This is deprecated and will be disallowed in a future release.
|
|
alter table t1 add constraint constraint_2 unique key_2(a);
|
|
Warnings:
|
|
Note 1831 Duplicate index 'key_2' defined on the table 'test.t1'. This is deprecated and will be disallowed in a future release.
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`a` int(11) NOT NULL DEFAULT '0',
|
|
PRIMARY KEY (`a`),
|
|
UNIQUE KEY `constraint_1` (`a`),
|
|
UNIQUE KEY `key_1` (`a`),
|
|
UNIQUE KEY `key_2` (`a`)
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
|
select * from information_schema.TABLE_CONSTRAINTS where
|
|
TABLE_SCHEMA= "test";
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_SCHEMA TABLE_NAME CONSTRAINT_TYPE
|
|
def test PRIMARY test t1 PRIMARY KEY
|
|
def test constraint_1 test t1 UNIQUE
|
|
def test key_1 test t1 UNIQUE
|
|
def test key_2 test t1 UNIQUE
|
|
select * from information_schema.KEY_COLUMN_USAGE where
|
|
TABLE_SCHEMA= "test";
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME
|
|
def test PRIMARY def test t1 a 1 NULL NULL NULL NULL
|
|
def test constraint_1 def test t1 a 1 NULL NULL NULL NULL
|
|
def test key_1 def test t1 a 1 NULL NULL NULL NULL
|
|
def test key_2 def test t1 a 1 NULL NULL NULL NULL
|
|
select table_name from information_schema.TABLES where table_schema like "test%";
|
|
table_name
|
|
t1
|
|
select table_name,column_name from information_schema.COLUMNS where table_schema like "test%";
|
|
table_name column_name
|
|
t1 a
|
|
select ROUTINE_NAME from information_schema.ROUTINES;
|
|
ROUTINE_NAME
|
|
sel2
|
|
sub1
|
|
delete from mysql.user where user='mysqltest_1';
|
|
drop table t1;
|
|
drop procedure sel2;
|
|
drop function sub1;
|
|
create table t1(a int);
|
|
create view v1 (c) as select a from t1 with check option;
|
|
create view v2 (c) as select a from t1 WITH LOCAL CHECK OPTION;
|
|
create view v3 (c) as select a from t1 WITH CASCADED CHECK OPTION;
|
|
select * from information_schema.views;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
|
|
def test v1 select `test`.`t1`.`a` AS `c` from `test`.`t1` CASCADED YES root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v2 select `test`.`t1`.`a` AS `c` from `test`.`t1` LOCAL YES root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v3 select `test`.`t1`.`a` AS `c` from `test`.`t1` CASCADED YES root@localhost DEFINER latin1 latin1_swedish_ci
|
|
grant select (a) on test.t1 to joe@localhost with grant option;
|
|
select * from INFORMATION_SCHEMA.COLUMN_PRIVILEGES;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'joe'@'localhost' def test t1 a SELECT YES
|
|
select * from INFORMATION_SCHEMA.TABLE_PRIVILEGES;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
drop view v1, v2, v3;
|
|
drop table t1;
|
|
delete from mysql.user where user='joe';
|
|
delete from mysql.db where user='joe';
|
|
delete from mysql.tables_priv where user='joe';
|
|
delete from mysql.columns_priv where user='joe';
|
|
flush privileges;
|
|
create table t1 (a int not null auto_increment,b int, primary key (a));
|
|
insert into t1 values (1,1),(NULL,3),(NULL,4);
|
|
select AUTO_INCREMENT from information_schema.tables where table_name = 't1';
|
|
AUTO_INCREMENT
|
|
4
|
|
drop table t1;
|
|
create table t1 (s1 int);
|
|
insert into t1 values (0),(9),(0);
|
|
select s1 from t1 where s1 in (select version from
|
|
information_schema.tables) union select version from
|
|
information_schema.tables;
|
|
s1
|
|
10
|
|
drop table t1;
|
|
SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
|
|
Table Create Table
|
|
CHARACTER_SETS CREATE TEMPORARY TABLE `CHARACTER_SETS` (
|
|
`CHARACTER_SET_NAME` varchar(32) NOT NULL DEFAULT '',
|
|
`DEFAULT_COLLATE_NAME` varchar(32) NOT NULL DEFAULT '',
|
|
`DESCRIPTION` varchar(60) NOT NULL DEFAULT '',
|
|
`MAXLEN` bigint(3) NOT NULL DEFAULT '0'
|
|
) ENGINE=MEMORY DEFAULT CHARSET=utf8
|
|
set names latin2;
|
|
SHOW CREATE TABLE INFORMATION_SCHEMA.character_sets;
|
|
Table Create Table
|
|
CHARACTER_SETS CREATE TEMPORARY TABLE `CHARACTER_SETS` (
|
|
`CHARACTER_SET_NAME` varchar(32) NOT NULL DEFAULT '',
|
|
`DEFAULT_COLLATE_NAME` varchar(32) NOT NULL DEFAULT '',
|
|
`DESCRIPTION` varchar(60) NOT NULL DEFAULT '',
|
|
`MAXLEN` bigint(3) NOT NULL DEFAULT '0'
|
|
) ENGINE=MEMORY DEFAULT CHARSET=utf8
|
|
set names latin1;
|
|
create table t1 select * from information_schema.CHARACTER_SETS
|
|
where CHARACTER_SET_NAME like "latin1";
|
|
select * from t1;
|
|
CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
|
|
latin1 latin1_swedish_ci cp1252 West European 1
|
|
alter table t1 default character set utf8;
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`CHARACTER_SET_NAME` varchar(32) NOT NULL DEFAULT '',
|
|
`DEFAULT_COLLATE_NAME` varchar(32) NOT NULL DEFAULT '',
|
|
`DESCRIPTION` varchar(60) NOT NULL DEFAULT '',
|
|
`MAXLEN` bigint(3) NOT NULL DEFAULT '0'
|
|
) ENGINE=MyISAM DEFAULT CHARSET=utf8
|
|
drop table t1;
|
|
create view v1 as select * from information_schema.TABLES;
|
|
drop view v1;
|
|
create table t1(a NUMERIC(5,3), b NUMERIC(5,1), c float(5,2),
|
|
d NUMERIC(6,4), e float, f DECIMAL(6,3), g int(11), h DOUBLE(10,3),
|
|
i DOUBLE);
|
|
select COLUMN_NAME,COLUMN_TYPE, CHARACTER_MAXIMUM_LENGTH,
|
|
CHARACTER_OCTET_LENGTH, NUMERIC_PRECISION, NUMERIC_SCALE
|
|
from information_schema.columns where table_name= 't1';
|
|
COLUMN_NAME COLUMN_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE
|
|
a decimal(5,3) NULL NULL 5 3
|
|
b decimal(5,1) NULL NULL 5 1
|
|
c float(5,2) NULL NULL 5 2
|
|
d decimal(6,4) NULL NULL 6 4
|
|
e float NULL NULL 12 NULL
|
|
f decimal(6,3) NULL NULL 6 3
|
|
g int(11) NULL NULL 10 0
|
|
h double(10,3) NULL NULL 10 3
|
|
i double NULL NULL 22 NULL
|
|
drop table t1;
|
|
create table t115 as select table_name, column_name, column_type
|
|
from information_schema.columns where table_name = 'proc';
|
|
select * from t115;
|
|
table_name column_name column_type
|
|
proc db char(64)
|
|
proc name char(64)
|
|
proc type enum('FUNCTION','PROCEDURE')
|
|
proc specific_name char(64)
|
|
proc language enum('SQL')
|
|
proc sql_data_access enum('CONTAINS_SQL','NO_SQL','READS_SQL_DATA','MODIFIES_SQL_DATA')
|
|
proc is_deterministic enum('YES','NO')
|
|
proc security_type enum('INVOKER','DEFINER')
|
|
proc param_list blob
|
|
proc returns longblob
|
|
proc body longblob
|
|
proc definer char(141)
|
|
proc created timestamp
|
|
proc modified timestamp
|
|
proc sql_mode set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES','IGNORE_SPACE','IGNORE_BAD_TABLE_OPTIONS','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION','NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB','NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40','ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES','STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES','ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER','HIGH_NOT_PRECEDENCE','NO_ENGINE_SUBSTITUTION','PAD_CHAR_TO_FULL_LENGTH')
|
|
proc comment text
|
|
proc character_set_client char(32)
|
|
proc collation_connection char(32)
|
|
proc db_collation char(32)
|
|
proc body_utf8 longblob
|
|
drop table t115;
|
|
create procedure p108 () begin declare c cursor for select data_type
|
|
from information_schema.columns; open c; open c; end;//
|
|
call p108()//
|
|
ERROR 24000: Cursor is already open
|
|
drop procedure p108;
|
|
create view v1 as select A1.table_name from information_schema.TABLES A1
|
|
where table_name= "user";
|
|
select * from v1;
|
|
table_name
|
|
user
|
|
drop view v1;
|
|
create view vo as select 'a' union select 'a';
|
|
show index from vo;
|
|
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
|
|
select * from information_schema.TABLE_CONSTRAINTS where
|
|
TABLE_NAME= "vo";
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_SCHEMA TABLE_NAME CONSTRAINT_TYPE
|
|
select * from information_schema.KEY_COLUMN_USAGE where
|
|
TABLE_NAME= "vo";
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME
|
|
drop view vo;
|
|
select TABLE_NAME,TABLE_TYPE,ENGINE
|
|
from information_schema.tables
|
|
where table_schema='information_schema' limit 2;
|
|
TABLE_NAME TABLE_TYPE ENGINE
|
|
ALL_PLUGINS SYSTEM VIEW Aria
|
|
APPLICABLE_ROLES SYSTEM VIEW MEMORY
|
|
show tables from information_schema like "T%";
|
|
Tables_in_information_schema (T%)
|
|
TABLES
|
|
TABLESPACES
|
|
TABLE_CONSTRAINTS
|
|
TABLE_PRIVILEGES
|
|
TABLE_STATISTICS
|
|
TRIGGERS
|
|
create database information_schema;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
use information_schema;
|
|
show full tables like "T%";
|
|
Tables_in_information_schema (T%) Table_type
|
|
TABLES SYSTEM VIEW
|
|
TABLESPACES SYSTEM VIEW
|
|
TABLE_CONSTRAINTS SYSTEM VIEW
|
|
TABLE_PRIVILEGES SYSTEM VIEW
|
|
TABLE_STATISTICS SYSTEM VIEW
|
|
TRIGGERS SYSTEM VIEW
|
|
create table t1(a int);
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
use test;
|
|
show tables;
|
|
Tables_in_test
|
|
use information_schema;
|
|
show tables like "T%";
|
|
Tables_in_information_schema (T%)
|
|
TABLES
|
|
TABLESPACES
|
|
TABLE_CONSTRAINTS
|
|
TABLE_PRIVILEGES
|
|
TABLE_STATISTICS
|
|
TRIGGERS
|
|
select table_name from tables where table_name='user';
|
|
table_name
|
|
user
|
|
select column_name, privileges from columns
|
|
where table_name='user' and column_name like '%o%';
|
|
column_name privileges
|
|
Host select,insert,update,references
|
|
Password select,insert,update,references
|
|
Drop_priv select,insert,update,references
|
|
Reload_priv select,insert,update,references
|
|
Shutdown_priv select,insert,update,references
|
|
Process_priv select,insert,update,references
|
|
Show_db_priv select,insert,update,references
|
|
Lock_tables_priv select,insert,update,references
|
|
Show_view_priv select,insert,update,references
|
|
Create_routine_priv select,insert,update,references
|
|
Alter_routine_priv select,insert,update,references
|
|
max_questions select,insert,update,references
|
|
max_connections select,insert,update,references
|
|
max_user_connections select,insert,update,references
|
|
authentication_string select,insert,update,references
|
|
password_expired select,insert,update,references
|
|
is_role select,insert,update,references
|
|
use test;
|
|
create function sub1(i int) returns int
|
|
return i+1;
|
|
create table t1(f1 int);
|
|
create view v2 (c) as select f1 from t1;
|
|
create view v3 (c) as select sub1(1);
|
|
create table t4(f1 int, KEY f1_key (f1));
|
|
drop table t1;
|
|
drop function sub1;
|
|
select table_name from information_schema.views
|
|
where table_schema='test';
|
|
table_name
|
|
v2
|
|
v3
|
|
select table_name from information_schema.views
|
|
where table_schema='test';
|
|
table_name
|
|
v2
|
|
v3
|
|
select column_name from information_schema.columns
|
|
where table_schema='test';
|
|
column_name
|
|
f1
|
|
Warnings:
|
|
Warning 1356 View 'test.v2' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
|
|
Warning 1356 View 'test.v3' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
|
|
select index_name from information_schema.statistics where table_schema='test';
|
|
index_name
|
|
f1_key
|
|
select constraint_name from information_schema.table_constraints
|
|
where table_schema='test';
|
|
constraint_name
|
|
show create view v2;
|
|
View Create View character_set_client collation_connection
|
|
v2 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS select `test`.`t1`.`f1` AS `c` from `t1` latin1 latin1_swedish_ci
|
|
Warnings:
|
|
Warning 1356 View 'test.v2' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
|
|
show create table v3;
|
|
View Create View character_set_client collation_connection
|
|
v3 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v3` AS select `sub1`(1) AS `c` latin1 latin1_swedish_ci
|
|
Warnings:
|
|
Warning 1356 View 'test.v3' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
|
|
drop view v2;
|
|
drop view v3;
|
|
drop table t4;
|
|
select * from information_schema.table_names;
|
|
ERROR 42S02: Unknown table 'table_names' in information_schema
|
|
select column_type from information_schema.columns
|
|
where table_schema="information_schema" and table_name="COLUMNS" and
|
|
(column_name="character_set_name" or column_name="collation_name");
|
|
column_type
|
|
varchar(32)
|
|
varchar(32)
|
|
select TABLE_ROWS from information_schema.tables where
|
|
table_schema="information_schema" and table_name="COLUMNS";
|
|
TABLE_ROWS
|
|
NULL
|
|
select table_type from information_schema.tables
|
|
where table_schema="mysql" and table_name="user";
|
|
table_type
|
|
BASE TABLE
|
|
show open tables where `table` like "user";
|
|
Database Table In_use Name_locked
|
|
mysql user 0 0
|
|
show status where variable_name like "%database%";
|
|
Variable_name Value
|
|
Com_show_databases 3
|
|
show variables where variable_name like "skip_show_databas";
|
|
Variable_name Value
|
|
show global status like "Threads_running";
|
|
Variable_name Value
|
|
Threads_running #
|
|
create table t1(f1 int);
|
|
create table t2(f2 int);
|
|
create view v1 as select * from t1, t2;
|
|
set @got_val= (select count(*) from information_schema.columns);
|
|
drop view v1;
|
|
drop table t1, t2;
|
|
use test;
|
|
CREATE TABLE t_crashme ( f1 BIGINT);
|
|
CREATE VIEW a1 (t_CRASHME) AS SELECT f1 FROM t_crashme GROUP BY f1;
|
|
CREATE VIEW a2 AS SELECT t_CRASHME FROM a1;
|
|
count(*)
|
|
68
|
|
drop view a2, a1;
|
|
drop table t_crashme;
|
|
select table_schema,table_name, column_name from
|
|
information_schema.columns
|
|
where data_type = 'longtext';
|
|
table_schema table_name column_name
|
|
information_schema ALL_PLUGINS PLUGIN_DESCRIPTION
|
|
information_schema COLUMNS COLUMN_DEFAULT
|
|
information_schema COLUMNS COLUMN_TYPE
|
|
information_schema EVENTS EVENT_DEFINITION
|
|
information_schema PARAMETERS DTD_IDENTIFIER
|
|
information_schema PARTITIONS PARTITION_EXPRESSION
|
|
information_schema PARTITIONS SUBPARTITION_EXPRESSION
|
|
information_schema PARTITIONS PARTITION_DESCRIPTION
|
|
information_schema PLUGINS PLUGIN_DESCRIPTION
|
|
information_schema PROCESSLIST INFO
|
|
information_schema ROUTINES DTD_IDENTIFIER
|
|
information_schema ROUTINES ROUTINE_DEFINITION
|
|
information_schema ROUTINES ROUTINE_COMMENT
|
|
information_schema TRIGGERS ACTION_CONDITION
|
|
information_schema TRIGGERS ACTION_STATEMENT
|
|
information_schema VIEWS VIEW_DEFINITION
|
|
performance_schema events_statements_current SQL_TEXT
|
|
performance_schema events_statements_current DIGEST_TEXT
|
|
performance_schema events_statements_history SQL_TEXT
|
|
performance_schema events_statements_history DIGEST_TEXT
|
|
performance_schema events_statements_history_long SQL_TEXT
|
|
performance_schema events_statements_history_long DIGEST_TEXT
|
|
performance_schema events_statements_summary_by_digest DIGEST_TEXT
|
|
performance_schema threads PROCESSLIST_INFO
|
|
select table_name, column_name, data_type from information_schema.columns
|
|
where data_type = 'datetime' and table_name not like 'innodb_%';
|
|
table_name column_name data_type
|
|
EVENTS EXECUTE_AT datetime
|
|
EVENTS STARTS datetime
|
|
EVENTS ENDS datetime
|
|
EVENTS CREATED datetime
|
|
EVENTS LAST_ALTERED datetime
|
|
EVENTS LAST_EXECUTED datetime
|
|
FILES CREATION_TIME datetime
|
|
FILES LAST_UPDATE_TIME datetime
|
|
FILES LAST_ACCESS_TIME datetime
|
|
FILES CREATE_TIME datetime
|
|
FILES UPDATE_TIME datetime
|
|
FILES CHECK_TIME datetime
|
|
PARTITIONS CREATE_TIME datetime
|
|
PARTITIONS UPDATE_TIME datetime
|
|
PARTITIONS CHECK_TIME datetime
|
|
ROUTINES CREATED datetime
|
|
ROUTINES LAST_ALTERED datetime
|
|
TABLES CREATE_TIME datetime
|
|
TABLES UPDATE_TIME datetime
|
|
TABLES CHECK_TIME datetime
|
|
TRIGGERS CREATED datetime
|
|
event execute_at datetime
|
|
event last_executed datetime
|
|
event starts datetime
|
|
event ends datetime
|
|
SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES A
|
|
WHERE NOT EXISTS
|
|
(SELECT * FROM INFORMATION_SCHEMA.COLUMNS B
|
|
WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
|
|
AND A.TABLE_NAME = B.TABLE_NAME);
|
|
COUNT(*)
|
|
0
|
|
create table t1
|
|
( x_bigint BIGINT,
|
|
x_integer INTEGER,
|
|
x_smallint SMALLINT,
|
|
x_decimal DECIMAL(5,3),
|
|
x_numeric NUMERIC(5,3),
|
|
x_real REAL,
|
|
x_float FLOAT,
|
|
x_double_precision DOUBLE PRECISION );
|
|
SELECT COLUMN_NAME, CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH
|
|
FROM INFORMATION_SCHEMA.COLUMNS
|
|
WHERE TABLE_NAME= 't1';
|
|
COLUMN_NAME CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH
|
|
x_bigint NULL NULL
|
|
x_integer NULL NULL
|
|
x_smallint NULL NULL
|
|
x_decimal NULL NULL
|
|
x_numeric NULL NULL
|
|
x_real NULL NULL
|
|
x_float NULL NULL
|
|
x_double_precision NULL NULL
|
|
drop table t1;
|
|
grant select on test.* to mysqltest_4@localhost;
|
|
SELECT TABLE_NAME, COLUMN_NAME, PRIVILEGES FROM INFORMATION_SCHEMA.COLUMNS
|
|
where COLUMN_NAME='TABLE_NAME' and table_name not like 'innodb%';
|
|
TABLE_NAME COLUMN_NAME PRIVILEGES
|
|
COLUMNS TABLE_NAME select
|
|
COLUMN_PRIVILEGES TABLE_NAME select
|
|
FILES TABLE_NAME select
|
|
INDEX_STATISTICS TABLE_NAME select
|
|
KEY_COLUMN_USAGE TABLE_NAME select
|
|
PARTITIONS TABLE_NAME select
|
|
REFERENTIAL_CONSTRAINTS TABLE_NAME select
|
|
STATISTICS TABLE_NAME select
|
|
TABLES TABLE_NAME select
|
|
TABLE_CONSTRAINTS TABLE_NAME select
|
|
TABLE_PRIVILEGES TABLE_NAME select
|
|
TABLE_STATISTICS TABLE_NAME select
|
|
VIEWS TABLE_NAME select
|
|
delete from mysql.user where user='mysqltest_4';
|
|
delete from mysql.db where user='mysqltest_4';
|
|
flush privileges;
|
|
create table t1 (i int, j int);
|
|
create trigger trg1 before insert on t1 for each row
|
|
begin
|
|
if new.j > 10 then
|
|
set new.j := 10;
|
|
end if;
|
|
end|
|
|
create trigger trg2 before update on t1 for each row
|
|
begin
|
|
if old.i % 2 = 0 then
|
|
set new.j := -1;
|
|
end if;
|
|
end|
|
|
create trigger trg3 after update on t1 for each row
|
|
begin
|
|
if new.j = -1 then
|
|
set @fired:= "Yes";
|
|
end if;
|
|
end|
|
|
show triggers;
|
|
Trigger Event Table Statement Timing Created sql_mode Definer character_set_client collation_connection Database Collation
|
|
trg1 INSERT t1 begin
|
|
if new.j > 10 then
|
|
set new.j := 10;
|
|
end if;
|
|
end BEFORE NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
trg2 UPDATE t1 begin
|
|
if old.i % 2 = 0 then
|
|
set new.j := -1;
|
|
end if;
|
|
end BEFORE NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
trg3 UPDATE t1 begin
|
|
if new.j = -1 then
|
|
set @fired:= "Yes";
|
|
end if;
|
|
end AFTER NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
select * from information_schema.triggers where trigger_schema in ('mysql', 'information_schema', 'test', 'mysqltest');
|
|
TRIGGER_CATALOG TRIGGER_SCHEMA TRIGGER_NAME EVENT_MANIPULATION EVENT_OBJECT_CATALOG EVENT_OBJECT_SCHEMA EVENT_OBJECT_TABLE ACTION_ORDER ACTION_CONDITION ACTION_STATEMENT ACTION_ORIENTATION ACTION_TIMING ACTION_REFERENCE_OLD_TABLE ACTION_REFERENCE_NEW_TABLE ACTION_REFERENCE_OLD_ROW ACTION_REFERENCE_NEW_ROW CREATED SQL_MODE DEFINER CHARACTER_SET_CLIENT COLLATION_CONNECTION DATABASE_COLLATION
|
|
def test trg1 INSERT def test t1 0 NULL begin
|
|
if new.j > 10 then
|
|
set new.j := 10;
|
|
end if;
|
|
end ROW BEFORE NULL NULL OLD NEW NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
def test trg2 UPDATE def test t1 0 NULL begin
|
|
if old.i % 2 = 0 then
|
|
set new.j := -1;
|
|
end if;
|
|
end ROW BEFORE NULL NULL OLD NEW NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
def test trg3 UPDATE def test t1 0 NULL begin
|
|
if new.j = -1 then
|
|
set @fired:= "Yes";
|
|
end if;
|
|
end ROW AFTER NULL NULL OLD NEW NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
drop trigger trg1;
|
|
drop trigger trg2;
|
|
drop trigger trg3;
|
|
drop table t1;
|
|
create database mysqltest;
|
|
create table mysqltest.t1 (f1 int, f2 int);
|
|
create table mysqltest.t2 (f1 int);
|
|
grant select (f1) on mysqltest.t1 to user1@localhost;
|
|
grant select on mysqltest.t2 to user2@localhost;
|
|
grant select on mysqltest.* to user3@localhost;
|
|
grant select on *.* to user4@localhost;
|
|
select * from information_schema.column_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user1'@'localhost' def mysqltest t1 f1 SELECT NO
|
|
select * from information_schema.table_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
select * from information_schema.schema_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
|
|
select * from information_schema.user_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user1'@'localhost' def USAGE NO
|
|
show grants;
|
|
Grants for user1@localhost
|
|
GRANT USAGE ON *.* TO 'user1'@'localhost'
|
|
GRANT SELECT (f1) ON `mysqltest`.`t1` TO 'user1'@'localhost'
|
|
select * from information_schema.column_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
select * from information_schema.table_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user2'@'localhost' def mysqltest t2 SELECT NO
|
|
select * from information_schema.schema_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
|
|
select * from information_schema.user_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user2'@'localhost' def USAGE NO
|
|
show grants;
|
|
Grants for user2@localhost
|
|
GRANT USAGE ON *.* TO 'user2'@'localhost'
|
|
GRANT SELECT ON `mysqltest`.`t2` TO 'user2'@'localhost'
|
|
select * from information_schema.column_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
select * from information_schema.table_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
select * from information_schema.schema_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user3'@'localhost' def mysqltest SELECT NO
|
|
select * from information_schema.user_privileges order by grantee;
|
|
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user3'@'localhost' def USAGE NO
|
|
show grants;
|
|
Grants for user3@localhost
|
|
GRANT USAGE ON *.* TO 'user3'@'localhost'
|
|
GRANT SELECT ON `mysqltest`.* TO 'user3'@'localhost'
|
|
select * from information_schema.column_privileges where grantee like '%user%'
|
|
order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user1'@'localhost' def mysqltest t1 f1 SELECT NO
|
|
select * from information_schema.table_privileges where grantee like '%user%'
|
|
order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user2'@'localhost' def mysqltest t2 SELECT NO
|
|
select * from information_schema.schema_privileges where grantee like '%user%'
|
|
order by grantee;
|
|
GRANTEE TABLE_CATALOG TABLE_SCHEMA PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user3'@'localhost' def mysqltest SELECT NO
|
|
select * from information_schema.user_privileges where grantee like '%user%'
|
|
order by grantee;
|
|
GRANTEE TABLE_CATALOG PRIVILEGE_TYPE IS_GRANTABLE
|
|
'user1'@'localhost' def USAGE NO
|
|
'user2'@'localhost' def USAGE NO
|
|
'user3'@'localhost' def USAGE NO
|
|
'user4'@'localhost' def SELECT NO
|
|
show grants;
|
|
Grants for user4@localhost
|
|
GRANT SELECT ON *.* TO 'user4'@'localhost'
|
|
drop user user1@localhost, user2@localhost, user3@localhost, user4@localhost;
|
|
use test;
|
|
drop database mysqltest;
|
|
drop procedure if exists p1;
|
|
drop procedure if exists p2;
|
|
create procedure p1 () modifies sql data set @a = 5;
|
|
create procedure p2 () set @a = 5;
|
|
select sql_data_access from information_schema.routines
|
|
where specific_name like 'p%';
|
|
sql_data_access
|
|
MODIFIES SQL DATA
|
|
CONTAINS SQL
|
|
drop procedure p1;
|
|
drop procedure p2;
|
|
show create database information_schema;
|
|
Database Create Database
|
|
information_schema CREATE DATABASE `information_schema` /*!40100 DEFAULT CHARACTER SET utf8 */
|
|
create table t1(f1 LONGBLOB, f2 LONGTEXT);
|
|
select column_name,data_type,CHARACTER_OCTET_LENGTH,
|
|
CHARACTER_MAXIMUM_LENGTH
|
|
from information_schema.columns
|
|
where table_name='t1';
|
|
column_name data_type CHARACTER_OCTET_LENGTH CHARACTER_MAXIMUM_LENGTH
|
|
f1 longblob 4294967295 4294967295
|
|
f2 longtext 4294967295 4294967295
|
|
drop table t1;
|
|
create table t1(f1 tinyint, f2 SMALLINT, f3 mediumint, f4 int,
|
|
f5 BIGINT, f6 BIT, f7 bit(64));
|
|
select column_name, NUMERIC_PRECISION, NUMERIC_SCALE
|
|
from information_schema.columns
|
|
where table_name='t1';
|
|
column_name NUMERIC_PRECISION NUMERIC_SCALE
|
|
f1 3 0
|
|
f2 5 0
|
|
f3 7 0
|
|
f4 10 0
|
|
f5 19 0
|
|
f6 1 NULL
|
|
f7 64 NULL
|
|
drop table t1;
|
|
create table t1 (f1 integer);
|
|
create trigger tr1 after insert on t1 for each row set @test_var=42;
|
|
use information_schema;
|
|
select trigger_schema, trigger_name from triggers where
|
|
trigger_name='tr1';
|
|
trigger_schema trigger_name
|
|
test tr1
|
|
use test;
|
|
drop table t1;
|
|
create table t1 (a int not null, b int);
|
|
use information_schema;
|
|
select column_name, column_default from columns
|
|
where table_schema='test' and table_name='t1';
|
|
column_name column_default
|
|
a NULL
|
|
b NULL
|
|
use test;
|
|
show columns from t1;
|
|
Field Type Null Key Default Extra
|
|
a int(11) NO NULL
|
|
b int(11) YES NULL
|
|
drop table t1;
|
|
CREATE TABLE t1 (a int);
|
|
CREATE TABLE t2 (b int);
|
|
SHOW TABLE STATUS FROM test
|
|
WHERE name IN ( SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
|
|
WHERE TABLE_SCHEMA='test' AND TABLE_TYPE='BASE TABLE');
|
|
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
|
|
t1 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
|
|
t2 MyISAM 10 Fixed 0 0 0 # 1024 0 NULL # # NULL latin1_swedish_ci NULL
|
|
DROP TABLE t1,t2;
|
|
create table t1(f1 int);
|
|
create view v1 (c) as select f1 from t1;
|
|
select database();
|
|
database()
|
|
NULL
|
|
show fields from test.v1;
|
|
Field Type Null Key Default Extra
|
|
c int(11) YES NULL
|
|
drop view v1;
|
|
drop table t1;
|
|
alter database information_schema;
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
|
|
drop database information_schema;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
drop table information_schema.tables;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
alter table information_schema.tables;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
use information_schema;
|
|
create temporary table schemata(f1 char(10));
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
CREATE PROCEDURE p1 ()
|
|
BEGIN
|
|
SELECT 'foo' FROM DUAL;
|
|
END |
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
select ROUTINE_NAME from routines where ROUTINE_SCHEMA='information_schema';
|
|
ROUTINE_NAME
|
|
grant all on information_schema.* to 'user1'@'localhost';
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
grant select on information_schema.* to 'user1'@'localhost';
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
use test;
|
|
create table t1(id int);
|
|
insert into t1(id) values (1);
|
|
select 1 from (select 1 from test.t1) a;
|
|
1
|
|
1
|
|
use information_schema;
|
|
select 1 from (select 1 from test.t1) a;
|
|
1
|
|
1
|
|
use test;
|
|
drop table t1;
|
|
create table t1 (f1 int(11));
|
|
create view v1 as select * from t1;
|
|
drop table t1;
|
|
select table_type from information_schema.tables
|
|
where table_name="v1";
|
|
table_type
|
|
VIEW
|
|
drop view v1;
|
|
create temporary table t1(f1 int, index(f1));
|
|
show columns from t1;
|
|
Field Type Null Key Default Extra
|
|
f1 int(11) YES MUL NULL
|
|
describe t1;
|
|
Field Type Null Key Default Extra
|
|
f1 int(11) YES MUL NULL
|
|
show indexes from t1;
|
|
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
|
|
t1 1 f1 1 f1 A NULL NULL NULL YES BTREE
|
|
drop table t1;
|
|
create table t1(f1 binary(32), f2 varbinary(64));
|
|
select character_maximum_length, character_octet_length
|
|
from information_schema.columns where table_name='t1';
|
|
character_maximum_length character_octet_length
|
|
32 32
|
|
64 64
|
|
drop table t1;
|
|
CREATE TABLE t1 (f1 BIGINT, f2 VARCHAR(20), f3 BIGINT);
|
|
INSERT INTO t1 SET f1 = 1, f2 = 'Schoenenbourg', f3 = 1;
|
|
CREATE FUNCTION func2() RETURNS BIGINT RETURN 1;
|
|
CREATE FUNCTION func1() RETURNS BIGINT
|
|
BEGIN
|
|
RETURN ( SELECT COUNT(*) FROM INFORMATION_SCHEMA.VIEWS);
|
|
END//
|
|
CREATE VIEW v1 AS SELECT 1 FROM t1
|
|
WHERE f3 = (SELECT func2 ());
|
|
SELECT func1();
|
|
func1()
|
|
1
|
|
DROP TABLE t1;
|
|
DROP VIEW v1;
|
|
DROP FUNCTION func1;
|
|
DROP FUNCTION func2;
|
|
select column_type, group_concat(table_schema, '.', table_name), count(*) as num
|
|
from information_schema.columns where
|
|
table_schema='information_schema' and
|
|
(column_type = 'varchar(7)' or column_type = 'varchar(20)'
|
|
or column_type = 'varchar(27)')
|
|
group by column_type order by num;
|
|
column_type group_concat(table_schema, '.', table_name) num
|
|
varchar(27) information_schema.COLUMNS 1
|
|
varchar(7) information_schema.ROUTINES,information_schema.VIEWS 2
|
|
varchar(20) information_schema.ALL_PLUGINS,information_schema.ALL_PLUGINS,information_schema.ALL_PLUGINS,information_schema.FILES,information_schema.FILES,information_schema.PLUGINS,information_schema.PLUGINS,information_schema.PLUGINS,information_schema.PROFILING 9
|
|
create table t1(f1 char(1) not null, f2 char(9) not null)
|
|
default character set utf8;
|
|
select CHARACTER_MAXIMUM_LENGTH, CHARACTER_OCTET_LENGTH from
|
|
information_schema.columns where table_schema='test' and table_name = 't1';
|
|
CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH
|
|
1 3
|
|
9 27
|
|
drop table t1;
|
|
use mysql;
|
|
INSERT INTO `proc` VALUES ('test','','PROCEDURE','','SQL','CONTAINS_SQL',
|
|
'NO','DEFINER','','','BEGIN\r\n \r\nEND','root@%','2006-03-02 18:40:03',
|
|
'2006-03-02 18:40:03','','','utf8','utf8_general_ci','utf8_general_ci','n/a');
|
|
select routine_name from information_schema.routines where ROUTINE_SCHEMA='test';
|
|
routine_name
|
|
|
|
delete from proc where name='';
|
|
use test;
|
|
grant select on test.* to mysqltest_1@localhost;
|
|
create table t1 (id int);
|
|
create view v1 as select * from t1;
|
|
create definer = mysqltest_1@localhost
|
|
sql security definer view v2 as select 1;
|
|
select * from information_schema.views
|
|
where table_name='v1' or table_name='v2';
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
|
|
def test v1 NONE YES root@localhost DEFINER latin1 latin1_swedish_ci
|
|
def test v2 select 1 AS `1` NONE NO mysqltest_1@localhost DEFINER latin1 latin1_swedish_ci
|
|
drop view v1, v2;
|
|
drop table t1;
|
|
drop user mysqltest_1@localhost;
|
|
set @a:= '.';
|
|
create table t1(f1 char(5));
|
|
create table t2(f1 char(5));
|
|
select concat(@a, table_name), @a, table_name
|
|
from information_schema.tables where table_schema = 'test';
|
|
concat(@a, table_name) @a table_name
|
|
.t1 . t1
|
|
.t2 . t2
|
|
drop table t1,t2;
|
|
DROP PROCEDURE IF EXISTS p1;
|
|
DROP FUNCTION IF EXISTS f1;
|
|
CREATE PROCEDURE p1() SET @a= 1;
|
|
CREATE FUNCTION f1() RETURNS INT RETURN @a + 1;
|
|
CREATE USER mysql_bug20230@localhost;
|
|
GRANT EXECUTE ON PROCEDURE p1 TO mysql_bug20230@localhost;
|
|
GRANT EXECUTE ON FUNCTION f1 TO mysql_bug20230@localhost;
|
|
SELECT ROUTINE_NAME, ROUTINE_DEFINITION FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_SCHEMA='test';
|
|
ROUTINE_NAME ROUTINE_DEFINITION
|
|
f1 RETURN @a + 1
|
|
p1 SET @a= 1
|
|
SHOW CREATE PROCEDURE p1;
|
|
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
|
|
p1 CREATE DEFINER=`root`@`localhost` PROCEDURE `p1`()
|
|
SET @a= 1 latin1 latin1_swedish_ci latin1_swedish_ci
|
|
SHOW CREATE FUNCTION f1;
|
|
Function sql_mode Create Function character_set_client collation_connection Database Collation
|
|
f1 CREATE DEFINER=`root`@`localhost` FUNCTION `f1`() RETURNS int(11)
|
|
RETURN @a + 1 latin1 latin1_swedish_ci latin1_swedish_ci
|
|
SELECT ROUTINE_NAME, ROUTINE_DEFINITION FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_SCHEMA='test';
|
|
ROUTINE_NAME ROUTINE_DEFINITION
|
|
f1 NULL
|
|
p1 NULL
|
|
SHOW CREATE PROCEDURE p1;
|
|
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
|
|
p1 NULL latin1 latin1_swedish_ci latin1_swedish_ci
|
|
SHOW CREATE FUNCTION f1;
|
|
Function sql_mode Create Function character_set_client collation_connection Database Collation
|
|
f1 NULL latin1 latin1_swedish_ci latin1_swedish_ci
|
|
CALL p1();
|
|
SELECT f1();
|
|
f1()
|
|
2
|
|
DROP FUNCTION f1;
|
|
DROP PROCEDURE p1;
|
|
DROP USER mysql_bug20230@localhost;
|
|
SELECT MAX(table_name) FROM information_schema.tables WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test') and table_name not like 'xtradb%';
|
|
MAX(table_name)
|
|
VIEWS
|
|
SELECT table_name from information_schema.tables
|
|
WHERE table_name=(SELECT MAX(table_name)
|
|
FROM information_schema.tables WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test') and table_name not like 'xtradb%');
|
|
table_name
|
|
VIEWS
|
|
DROP TABLE IF EXISTS bug23037;
|
|
DROP FUNCTION IF EXISTS get_value;
|
|
SELECT COLUMN_NAME, MD5(COLUMN_DEFAULT), LENGTH(COLUMN_DEFAULT) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='bug23037';
|
|
COLUMN_NAME MD5(COLUMN_DEFAULT) LENGTH(COLUMN_DEFAULT)
|
|
fld1 7cf7a6782be951a1f2464a350da926a5 65532
|
|
SELECT MD5(get_value());
|
|
MD5(get_value())
|
|
7cf7a6782be951a1f2464a350da926a5
|
|
SELECT COLUMN_NAME, MD5(COLUMN_DEFAULT), LENGTH(COLUMN_DEFAULT), COLUMN_DEFAULT=get_value() FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='bug23037';
|
|
COLUMN_NAME MD5(COLUMN_DEFAULT) LENGTH(COLUMN_DEFAULT) COLUMN_DEFAULT=get_value()
|
|
fld1 7cf7a6782be951a1f2464a350da926a5 65532 1
|
|
DROP TABLE bug23037;
|
|
DROP FUNCTION get_value;
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
set optimizer_switch='derived_merge=off,derived_with_keys=off';
|
|
create view v1 as
|
|
select table_schema as object_schema,
|
|
table_name as object_name,
|
|
table_type as object_type
|
|
from information_schema.tables
|
|
order by object_schema;
|
|
explain select * from v1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE tables ALL NULL NULL NULL NULL NULL Open_frm_only; Scanned all databases; Using filesort
|
|
explain select * from (select table_name from information_schema.tables) as a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
|
2 DERIVED tables ALL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases
|
|
set optimizer_switch=@tmp_optimizer_switch;
|
|
drop view v1;
|
|
create table t1 (f1 int(11));
|
|
create table t2 (f1 int(11), f2 int(11));
|
|
select table_name from information_schema.tables
|
|
where table_schema = 'test' and table_name not in
|
|
(select table_name from information_schema.columns
|
|
where table_schema = 'test' and column_name = 'f3');
|
|
table_name
|
|
t1
|
|
t2
|
|
drop table t1,t2;
|
|
create table t1(f1 int);
|
|
create view v1 as select f1+1 as a from t1;
|
|
create table t2 (f1 int, f2 int);
|
|
create view v2 as select f1+1 as a, f2 as b from t2;
|
|
select table_name, is_updatable from information_schema.views;
|
|
table_name is_updatable
|
|
v1 NO
|
|
v2 YES
|
|
delete from v1;
|
|
drop view v1,v2;
|
|
drop table t1,t2;
|
|
alter database;
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
|
|
alter database test;
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
|
|
create database mysqltest;
|
|
create table mysqltest.t1(a int, b int, c int);
|
|
create trigger mysqltest.t1_ai after insert on mysqltest.t1
|
|
for each row set @a = new.a + new.b + new.c;
|
|
grant select(b) on mysqltest.t1 to mysqltest_1@localhost;
|
|
select trigger_name from information_schema.triggers
|
|
where event_object_table='t1';
|
|
trigger_name
|
|
t1_ai
|
|
show triggers from mysqltest;
|
|
Trigger Event Table Statement Timing Created sql_mode Definer character_set_client collation_connection Database Collation
|
|
t1_ai INSERT t1 set @a = new.a + new.b + new.c AFTER NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
|
|
show columns from t1;
|
|
Field Type Null Key Default Extra
|
|
b int(11) YES NULL
|
|
select column_name from information_schema.columns where table_name='t1';
|
|
column_name
|
|
b
|
|
show triggers;
|
|
Trigger Event Table Statement Timing Created sql_mode Definer character_set_client collation_connection Database Collation
|
|
select trigger_name from information_schema.triggers
|
|
where event_object_table='t1';
|
|
trigger_name
|
|
drop user mysqltest_1@localhost;
|
|
drop database mysqltest;
|
|
create table t1 (
|
|
f1 varchar(50),
|
|
f2 varchar(50) not null,
|
|
f3 varchar(50) default '',
|
|
f4 varchar(50) default NULL,
|
|
f5 bigint not null,
|
|
f6 bigint not null default 10,
|
|
f7 datetime not null,
|
|
f8 datetime default '2006-01-01'
|
|
);
|
|
select column_default from information_schema.columns where table_name= 't1';
|
|
column_default
|
|
NULL
|
|
NULL
|
|
|
|
NULL
|
|
NULL
|
|
10
|
|
NULL
|
|
2006-01-01 00:00:00
|
|
show columns from t1;
|
|
Field Type Null Key Default Extra
|
|
f1 varchar(50) YES NULL
|
|
f2 varchar(50) NO NULL
|
|
f3 varchar(50) YES
|
|
f4 varchar(50) YES NULL
|
|
f5 bigint(20) NO NULL
|
|
f6 bigint(20) NO 10
|
|
f7 datetime NO NULL
|
|
f8 datetime YES 2006-01-01 00:00:00
|
|
drop table t1;
|
|
show fields from information_schema.table_names;
|
|
ERROR 42S02: Unknown table 'table_names' in information_schema
|
|
show keys from information_schema.table_names;
|
|
ERROR 42S02: Unknown table 'table_names' in information_schema
|
|
USE information_schema;
|
|
SET max_heap_table_size = 16384;
|
|
CREATE TABLE test.t1( a INT );
|
|
SELECT *
|
|
FROM tables ta
|
|
JOIN collations co ON ( co.collation_name = ta.table_catalog )
|
|
JOIN character_sets cs ON ( cs.character_set_name = ta.table_catalog );
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME TABLE_TYPE ENGINE VERSION ROW_FORMAT TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE AUTO_INCREMENT CREATE_TIME UPDATE_TIME CHECK_TIME TABLE_COLLATION CHECKSUM CREATE_OPTIONS TABLE_COMMENT COLLATION_NAME CHARACTER_SET_NAME ID IS_DEFAULT IS_COMPILED SORTLEN CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
|
|
DROP TABLE test.t1;
|
|
SET max_heap_table_size = DEFAULT;
|
|
USE test;
|
|
End of 5.0 tests.
|
|
select * from information_schema.engines WHERE ENGINE="MyISAM";
|
|
ENGINE SUPPORT COMMENT TRANSACTIONS XA SAVEPOINTS
|
|
MyISAM DEFAULT MyISAM storage engine NO NO NO
|
|
grant select on *.* to user3148@localhost;
|
|
select user,db from information_schema.processlist;
|
|
user db
|
|
user3148 test
|
|
drop user user3148@localhost;
|
|
SELECT 'other connection here' AS who;
|
|
who
|
|
other connection here
|
|
SELECT IF(`time` > 0, 'OK', `time`) AS time_low,
|
|
IF(`time` < 1000, 'OK', `time`) AS time_high,
|
|
IF(time_ms >= 1000, 'OK', time_ms) AS time_ms_low,
|
|
IF(time_ms < 1000000, 'OK', time_ms) AS time_ms_high
|
|
FROM INFORMATION_SCHEMA.PROCESSLIST
|
|
WHERE ID=@tid;
|
|
time_low time_high time_ms_low time_ms_high
|
|
OK OK OK OK
|
|
DROP TABLE IF EXISTS server_status;
|
|
DROP EVENT IF EXISTS event_status;
|
|
SET GLOBAL event_scheduler=1;
|
|
CREATE EVENT event_status
|
|
ON SCHEDULE AT NOW()
|
|
ON COMPLETION NOT PRESERVE
|
|
DO
|
|
BEGIN
|
|
CREATE TABLE server_status
|
|
SELECT variable_name
|
|
FROM information_schema.global_status
|
|
WHERE variable_name LIKE 'ABORTED_CONNECTS' OR
|
|
variable_name LIKE 'BINLOG_CACHE_DISK_USE';
|
|
END$$
|
|
SELECT variable_name FROM server_status;
|
|
variable_name
|
|
ABORTED_CONNECTS
|
|
BINLOG_CACHE_DISK_USE
|
|
DROP TABLE server_status;
|
|
SET GLOBAL event_scheduler=0;
|
|
explain select table_name from information_schema.views where
|
|
table_schema='test' and table_name='v1';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE views ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL Using where; Open_frm_only; Scanned 0 databases
|
|
explain select * from information_schema.tables;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE tables ALL NULL NULL NULL NULL NULL Open_full_table; Scanned all databases
|
|
explain select * from information_schema.collations;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE collations ALL NULL NULL NULL NULL NULL
|
|
explain select * from information_schema.tables where
|
|
table_schema='test' and table_name= 't1';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE tables ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL Using where; Open_full_table; Scanned 0 databases
|
|
explain select table_name, table_type from information_schema.tables
|
|
where table_schema='test';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE tables ALL NULL TABLE_SCHEMA NULL NULL NULL Using where; Open_frm_only; Scanned 1 database
|
|
explain select b.table_name
|
|
from information_schema.tables a, information_schema.columns b
|
|
where a.table_name='t1' and a.table_schema='test' and b.table_name=a.table_name;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE a ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL Using where; Skip_open_table; Scanned 0 databases
|
|
1 SIMPLE b ALL NULL NULL NULL NULL NULL Using where; Open_frm_only; Scanned all databases; Using join buffer (flat, BNL join)
|
|
SELECT * FROM INFORMATION_SCHEMA.SCHEMATA
|
|
WHERE SCHEMA_NAME = 'mysqltest';
|
|
CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH
|
|
SELECT * FROM INFORMATION_SCHEMA.SCHEMATA
|
|
WHERE SCHEMA_NAME = '';
|
|
CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH
|
|
SELECT * FROM INFORMATION_SCHEMA.SCHEMATA
|
|
WHERE SCHEMA_NAME = 'test';
|
|
CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH
|
|
def test latin1 latin1_swedish_ci NULL
|
|
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='mysql' AND TABLE_NAME='nonexisting';
|
|
count(*)
|
|
0
|
|
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='mysql' AND TABLE_NAME='';
|
|
count(*)
|
|
0
|
|
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='' AND TABLE_NAME='';
|
|
count(*)
|
|
0
|
|
select count(*) from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='' AND TABLE_NAME='nonexisting';
|
|
count(*)
|
|
0
|
|
CREATE VIEW v1
|
|
AS SELECT *
|
|
FROM information_schema.tables;
|
|
SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS where TABLE_NAME = 'v1';
|
|
VIEW_DEFINITION
|
|
select `information_schema`.`tables`.`TABLE_CATALOG` AS `TABLE_CATALOG`,`information_schema`.`tables`.`TABLE_SCHEMA` AS `TABLE_SCHEMA`,`information_schema`.`tables`.`TABLE_NAME` AS `TABLE_NAME`,`information_schema`.`tables`.`TABLE_TYPE` AS `TABLE_TYPE`,`information_schema`.`tables`.`ENGINE` AS `ENGINE`,`information_schema`.`tables`.`VERSION` AS `VERSION`,`information_schema`.`tables`.`ROW_FORMAT` AS `ROW_FORMAT`,`information_schema`.`tables`.`TABLE_ROWS` AS `TABLE_ROWS`,`information_schema`.`tables`.`AVG_ROW_LENGTH` AS `AVG_ROW_LENGTH`,`information_schema`.`tables`.`DATA_LENGTH` AS `DATA_LENGTH`,`information_schema`.`tables`.`MAX_DATA_LENGTH` AS `MAX_DATA_LENGTH`,`information_schema`.`tables`.`INDEX_LENGTH` AS `INDEX_LENGTH`,`information_schema`.`tables`.`DATA_FREE` AS `DATA_FREE`,`information_schema`.`tables`.`AUTO_INCREMENT` AS `AUTO_INCREMENT`,`information_schema`.`tables`.`CREATE_TIME` AS `CREATE_TIME`,`information_schema`.`tables`.`UPDATE_TIME` AS `UPDATE_TIME`,`information_schema`.`tables`.`CHECK_TIME` AS `CHECK_TIME`,`information_schema`.`tables`.`TABLE_COLLATION` AS `TABLE_COLLATION`,`information_schema`.`tables`.`CHECKSUM` AS `CHECKSUM`,`information_schema`.`tables`.`CREATE_OPTIONS` AS `CREATE_OPTIONS`,`information_schema`.`tables`.`TABLE_COMMENT` AS `TABLE_COMMENT` from `information_schema`.`tables`
|
|
DROP VIEW v1;
|
|
SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA
|
|
WHERE SCHEMA_NAME ='information_schema';
|
|
SCHEMA_NAME
|
|
information_schema
|
|
SELECT TABLE_COLLATION FROM INFORMATION_SCHEMA.TABLES
|
|
WHERE TABLE_SCHEMA='mysql' and TABLE_NAME= 'db';
|
|
TABLE_COLLATION
|
|
utf8_bin
|
|
select * from information_schema.columns where table_schema = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION COLUMN_DEFAULT IS_NULLABLE DATA_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE DATETIME_PRECISION CHARACTER_SET_NAME COLLATION_NAME COLUMN_TYPE COLUMN_KEY EXTRA PRIVILEGES COLUMN_COMMENT
|
|
select * from `information_schema`.`COLUMNS` where `TABLE_NAME` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION COLUMN_DEFAULT IS_NULLABLE DATA_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE DATETIME_PRECISION CHARACTER_SET_NAME COLLATION_NAME COLUMN_TYPE COLUMN_KEY EXTRA PRIVILEGES COLUMN_COMMENT
|
|
select * from `information_schema`.`KEY_COLUMN_USAGE` where `TABLE_SCHEMA` = NULL;
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME
|
|
select * from `information_schema`.`KEY_COLUMN_USAGE` where `TABLE_NAME` = NULL;
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG TABLE_SCHEMA TABLE_NAME COLUMN_NAME ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME
|
|
select * from `information_schema`.`PARTITIONS` where `TABLE_SCHEMA` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PARTITION_NAME SUBPARTITION_NAME PARTITION_ORDINAL_POSITION SUBPARTITION_ORDINAL_POSITION PARTITION_METHOD SUBPARTITION_METHOD PARTITION_EXPRESSION SUBPARTITION_EXPRESSION PARTITION_DESCRIPTION TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE CREATE_TIME UPDATE_TIME CHECK_TIME CHECKSUM PARTITION_COMMENT NODEGROUP TABLESPACE_NAME
|
|
select * from `information_schema`.`PARTITIONS` where `TABLE_NAME` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME PARTITION_NAME SUBPARTITION_NAME PARTITION_ORDINAL_POSITION SUBPARTITION_ORDINAL_POSITION PARTITION_METHOD SUBPARTITION_METHOD PARTITION_EXPRESSION SUBPARTITION_EXPRESSION PARTITION_DESCRIPTION TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE CREATE_TIME UPDATE_TIME CHECK_TIME CHECKSUM PARTITION_COMMENT NODEGROUP TABLESPACE_NAME
|
|
select * from `information_schema`.`REFERENTIAL_CONSTRAINTS` where `CONSTRAINT_SCHEMA` = NULL;
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME UNIQUE_CONSTRAINT_CATALOG UNIQUE_CONSTRAINT_SCHEMA UNIQUE_CONSTRAINT_NAME MATCH_OPTION UPDATE_RULE DELETE_RULE TABLE_NAME REFERENCED_TABLE_NAME
|
|
select * from `information_schema`.`REFERENTIAL_CONSTRAINTS` where `TABLE_NAME` = NULL;
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME UNIQUE_CONSTRAINT_CATALOG UNIQUE_CONSTRAINT_SCHEMA UNIQUE_CONSTRAINT_NAME MATCH_OPTION UPDATE_RULE DELETE_RULE TABLE_NAME REFERENCED_TABLE_NAME
|
|
select * from information_schema.schemata where schema_name = NULL;
|
|
CATALOG_NAME SCHEMA_NAME DEFAULT_CHARACTER_SET_NAME DEFAULT_COLLATION_NAME SQL_PATH
|
|
select * from `information_schema`.`STATISTICS` where `TABLE_SCHEMA` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME NON_UNIQUE INDEX_SCHEMA INDEX_NAME SEQ_IN_INDEX COLUMN_NAME COLLATION CARDINALITY SUB_PART PACKED NULLABLE INDEX_TYPE COMMENT INDEX_COMMENT
|
|
select * from `information_schema`.`STATISTICS` where `TABLE_NAME` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME NON_UNIQUE INDEX_SCHEMA INDEX_NAME SEQ_IN_INDEX COLUMN_NAME COLLATION CARDINALITY SUB_PART PACKED NULLABLE INDEX_TYPE COMMENT INDEX_COMMENT
|
|
select * from information_schema.tables where table_schema = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME TABLE_TYPE ENGINE VERSION ROW_FORMAT TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE AUTO_INCREMENT CREATE_TIME UPDATE_TIME CHECK_TIME TABLE_COLLATION CHECKSUM CREATE_OPTIONS TABLE_COMMENT
|
|
select * from information_schema.tables where table_catalog = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME TABLE_TYPE ENGINE VERSION ROW_FORMAT TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE AUTO_INCREMENT CREATE_TIME UPDATE_TIME CHECK_TIME TABLE_COLLATION CHECKSUM CREATE_OPTIONS TABLE_COMMENT
|
|
select * from information_schema.tables where table_name = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME TABLE_TYPE ENGINE VERSION ROW_FORMAT TABLE_ROWS AVG_ROW_LENGTH DATA_LENGTH MAX_DATA_LENGTH INDEX_LENGTH DATA_FREE AUTO_INCREMENT CREATE_TIME UPDATE_TIME CHECK_TIME TABLE_COLLATION CHECKSUM CREATE_OPTIONS TABLE_COMMENT
|
|
select * from `information_schema`.`TABLE_CONSTRAINTS` where `TABLE_SCHEMA` = NULL;
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_SCHEMA TABLE_NAME CONSTRAINT_TYPE
|
|
select * from `information_schema`.`TABLE_CONSTRAINTS` where `TABLE_NAME` = NULL;
|
|
CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_SCHEMA TABLE_NAME CONSTRAINT_TYPE
|
|
select * from `information_schema`.`TRIGGERS` where `EVENT_OBJECT_SCHEMA` = NULL;
|
|
TRIGGER_CATALOG TRIGGER_SCHEMA TRIGGER_NAME EVENT_MANIPULATION EVENT_OBJECT_CATALOG EVENT_OBJECT_SCHEMA EVENT_OBJECT_TABLE ACTION_ORDER ACTION_CONDITION ACTION_STATEMENT ACTION_ORIENTATION ACTION_TIMING ACTION_REFERENCE_OLD_TABLE ACTION_REFERENCE_NEW_TABLE ACTION_REFERENCE_OLD_ROW ACTION_REFERENCE_NEW_ROW CREATED SQL_MODE DEFINER CHARACTER_SET_CLIENT COLLATION_CONNECTION DATABASE_COLLATION
|
|
select * from `information_schema`.`TRIGGERS` where `EVENT_OBJECT_TABLE` = NULL;
|
|
TRIGGER_CATALOG TRIGGER_SCHEMA TRIGGER_NAME EVENT_MANIPULATION EVENT_OBJECT_CATALOG EVENT_OBJECT_SCHEMA EVENT_OBJECT_TABLE ACTION_ORDER ACTION_CONDITION ACTION_STATEMENT ACTION_ORIENTATION ACTION_TIMING ACTION_REFERENCE_OLD_TABLE ACTION_REFERENCE_NEW_TABLE ACTION_REFERENCE_OLD_ROW ACTION_REFERENCE_NEW_ROW CREATED SQL_MODE DEFINER CHARACTER_SET_CLIENT COLLATION_CONNECTION DATABASE_COLLATION
|
|
select * from `information_schema`.`VIEWS` where `TABLE_SCHEMA` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
|
|
select * from `information_schema`.`VIEWS` where `TABLE_NAME` = NULL;
|
|
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME VIEW_DEFINITION CHECK_OPTION IS_UPDATABLE DEFINER SECURITY_TYPE CHARACTER_SET_CLIENT COLLATION_CONNECTION
|
|
explain extended select 1 from information_schema.tables;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE tables ALL NULL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases
|
|
Warnings:
|
|
Note 1003 select 1 AS `1` from `information_schema`.`tables`
|
|
use information_schema;
|
|
show events;
|
|
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
|
|
show events from information_schema;
|
|
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
|
|
show events where Db= 'information_schema';
|
|
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
|
|
use test;
|
|
#
|
|
# Bug#34166 Server crash in SHOW OPEN TABLES and prelocking
|
|
#
|
|
drop table if exists t1;
|
|
drop function if exists f1;
|
|
create table t1 (a int);
|
|
create function f1() returns int
|
|
begin
|
|
insert into t1 (a) values (1);
|
|
return 0;
|
|
end|
|
|
show open tables where f1()=0;
|
|
show open tables where f1()=0;
|
|
drop table t1;
|
|
drop function f1;
|
|
select * from information_schema.tables where 1=sleep(100000);
|
|
select * from information_schema.columns where 1=sleep(100000);
|
|
explain select count(*) from information_schema.tables;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE tables ALL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases
|
|
explain select count(*) from information_schema.columns;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE columns ALL NULL NULL NULL NULL NULL Open_frm_only; Scanned all databases
|
|
explain select count(*) from information_schema.views;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE views ALL NULL NULL NULL NULL NULL Open_frm_only; Scanned all databases
|
|
set global init_connect="drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;\
|
|
drop table if exists t1;drop table if exists t1;";
|
|
select * from information_schema.global_variables where variable_name='init_connect';
|
|
VARIABLE_NAME VARIABLE_VALUE
|
|
INIT_CONNECT drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists t1;
|
|
drop table if exists t1;drop table if exists
|
|
Warnings:
|
|
Warning 1265 Data truncated for column 'VARIABLE_VALUE' at row 1
|
|
set global init_connect="";
|
|
create table t0 select * from information_schema.global_status where VARIABLE_NAME='COM_SELECT';
|
|
SELECT 1;
|
|
1
|
|
1
|
|
select a.VARIABLE_VALUE - b.VARIABLE_VALUE from t0 b, information_schema.global_status a
|
|
where a.VARIABLE_NAME = b.VARIABLE_NAME;
|
|
a.VARIABLE_VALUE - b.VARIABLE_VALUE
|
|
2
|
|
drop table t0;
|
|
CREATE TABLE t1(a INT) KEY_BLOCK_SIZE=1;
|
|
SELECT CREATE_OPTIONS FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='t1';
|
|
CREATE_OPTIONS
|
|
key_block_size=1
|
|
DROP TABLE t1;
|
|
SET TIMESTAMP=@@TIMESTAMP + 10000000;
|
|
SELECT 'NOT_OK' AS TEST_RESULT FROM INFORMATION_SCHEMA.PROCESSLIST WHERE time < 0;
|
|
TEST_RESULT
|
|
SET TIMESTAMP=DEFAULT;
|
|
#
|
|
# Bug #50276: Security flaw in INFORMATION_SCHEMA.TABLES
|
|
#
|
|
CREATE DATABASE db1;
|
|
USE db1;
|
|
CREATE TABLE t1 (id INT);
|
|
CREATE USER nonpriv;
|
|
USE test;
|
|
# connected as nonpriv
|
|
# Should return 0
|
|
SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='t1';
|
|
COUNT(*)
|
|
0
|
|
USE INFORMATION_SCHEMA;
|
|
# Should return 0
|
|
SELECT COUNT(*) FROM TABLES WHERE TABLE_NAME='t1';
|
|
COUNT(*)
|
|
0
|
|
# connected as root
|
|
DROP USER nonpriv;
|
|
DROP TABLE db1.t1;
|
|
DROP DATABASE db1;
|
|
|
|
Bug#54422 query with = 'variables'
|
|
|
|
CREATE TABLE variables(f1 INT);
|
|
SELECT COLUMN_DEFAULT, TABLE_NAME
|
|
FROM INFORMATION_SCHEMA.COLUMNS
|
|
WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = 'variables';
|
|
COLUMN_DEFAULT TABLE_NAME
|
|
NULL variables
|
|
DROP TABLE variables;
|
|
#
|
|
# Bug #53814: NUMERIC_PRECISION for unsigned bigint field is 19,
|
|
# should be 20
|
|
#
|
|
CREATE TABLE ubig (a BIGINT, b BIGINT UNSIGNED);
|
|
SELECT TABLE_NAME, COLUMN_NAME, NUMERIC_PRECISION
|
|
FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='ubig';
|
|
TABLE_NAME COLUMN_NAME NUMERIC_PRECISION
|
|
ubig a 19
|
|
ubig b 20
|
|
INSERT INTO ubig VALUES (0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF);
|
|
Warnings:
|
|
Warning 1264 Out of range value for column 'a' at row 1
|
|
SELECT length(CAST(b AS CHAR)) FROM ubig;
|
|
length(CAST(b AS CHAR))
|
|
20
|
|
DROP TABLE ubig;
|
|
select 1 from information_schema.tables where table_schema=repeat('a', 2000);
|
|
1
|
|
grant usage on *.* to mysqltest_1@localhost;
|
|
select 1 from information_schema.tables where table_schema=repeat('a', 2000);
|
|
1
|
|
drop user mysqltest_1@localhost;
|
|
End of 5.1 tests.
|
|
#
|
|
# Additional test for WL#3726 "DDL locking for all metadata objects"
|
|
# To avoid possible deadlocks process of filling of I_S tables should
|
|
# use high-priority metadata lock requests when opening tables.
|
|
# Below we just test that we really use high-priority lock request
|
|
# since reproducing a deadlock will require much more complex test.
|
|
#
|
|
drop tables if exists t1, t2, t3;
|
|
create table t1 (i int);
|
|
create table t2 (j int primary key auto_increment);
|
|
# Switching to connection 'con3726_1'
|
|
lock table t2 read;
|
|
# Switching to connection 'con3726_2'
|
|
# RENAME below will be blocked by 'lock table t2 read' above but
|
|
# will add two pending requests for exclusive metadata locks.
|
|
rename table t2 to t3;
|
|
# Switching to connection 'default'
|
|
# These statements should not be blocked by pending lock requests
|
|
select table_name, column_name, data_type from information_schema.columns
|
|
where table_schema = 'test' and table_name in ('t1', 't2');
|
|
table_name column_name data_type
|
|
t1 i int
|
|
t2 j int
|
|
select table_name, auto_increment from information_schema.tables
|
|
where table_schema = 'test' and table_name in ('t1', 't2');
|
|
table_name auto_increment
|
|
t1 NULL
|
|
t2 1
|
|
# Switching to connection 'con3726_1'
|
|
unlock tables;
|
|
# Switching to connection 'con3726_2'
|
|
# Switching to connection 'default'
|
|
drop tables t1, t3;
|
|
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE KEY_COLUMN_USAGE ALL NULL NULL NULL NULL NULL Open_full_table; Scanned all databases
|
|
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME='t1';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE PARTITIONS ALL NULL TABLE_NAME NULL NULL NULL Using where; Open_full_table; Scanned 1 database
|
|
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
|
|
WHERE CONSTRAINT_SCHEMA='test';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE REFERENTIAL_CONSTRAINTS ALL NULL CONSTRAINT_SCHEMA NULL NULL NULL Using where; Open_full_table; Scanned 1 database
|
|
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
|
|
WHERE TABLE_NAME='t1' and TABLE_SCHEMA='test';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE TABLE_CONSTRAINTS ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL Using where; Open_full_table; Scanned 0 databases
|
|
EXPLAIN SELECT * FROM INFORMATION_SCHEMA.TRIGGERS
|
|
WHERE EVENT_OBJECT_SCHEMA='test';
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE TRIGGERS ALL NULL EVENT_OBJECT_SCHEMA NULL NULL NULL Using where; Open_frm_only; Scanned 1 database
|
|
create table information_schema.t1 (f1 INT);
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
drop table information_schema.t1;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
drop temporary table if exists information_schema.t1;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
create temporary table information_schema.t1 (f1 INT);
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
drop view information_schema.v1;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
create view information_schema.v1;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
create trigger mysql.trg1 after insert on information_schema.t1 for each row set @a=1;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
create table t1 select * from information_schema.t1;
|
|
ERROR 42S02: Unknown table 't1' in information_schema
|
|
CREATE TABLE t1(f1 char(100));
|
|
REPAIR TABLE t1, information_schema.tables;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
CHECKSUM TABLE t1, information_schema.tables;
|
|
Table Checksum
|
|
test.t1 0
|
|
information_schema.tables 0
|
|
ANALYZE TABLE t1, information_schema.tables;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
CHECK TABLE t1, information_schema.tables;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 check status OK
|
|
information_schema.tables check note The storage engine for the table doesn't support check
|
|
OPTIMIZE TABLE t1, information_schema.tables;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
RENAME TABLE v1 to v2, information_schema.tables to t2;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
DROP TABLE t1, information_schema.tables;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
LOCK TABLES t1 READ, information_schema.tables READ;
|
|
ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'
|
|
DROP TABLE t1;
|
|
SELECT *
|
|
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
|
|
LEFT JOIN INFORMATION_SCHEMA.COLUMNS
|
|
USING (TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME)
|
|
WHERE COLUMNS.TABLE_SCHEMA = 'test'
|
|
AND COLUMNS.TABLE_NAME = 't1';
|
|
TABLE_SCHEMA TABLE_NAME COLUMN_NAME CONSTRAINT_CATALOG CONSTRAINT_SCHEMA CONSTRAINT_NAME TABLE_CATALOG ORDINAL_POSITION POSITION_IN_UNIQUE_CONSTRAINT REFERENCED_TABLE_SCHEMA REFERENCED_TABLE_NAME REFERENCED_COLUMN_NAME TABLE_CATALOG ORDINAL_POSITION COLUMN_DEFAULT IS_NULLABLE DATA_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE DATETIME_PRECISION CHARACTER_SET_NAME COLLATION_NAME COLUMN_TYPE COLUMN_KEY EXTRA PRIVILEGES COLUMN_COMMENT
|
|
#
|
|
# A test case for Bug#56540 "Exception (crash) in sql_show.cc
|
|
# during rqg_info_schema test on Windows"
|
|
# Ensure that we never access memory of a closed table,
|
|
# in particular, never access table->field[] array.
|
|
# Before the fix, the below test case, produced
|
|
# valgrind errors.
|
|
#
|
|
drop table if exists t1;
|
|
drop view if exists v1;
|
|
create table t1 (a int, b int);
|
|
create view v1 as select t1.a, t1.b from t1;
|
|
alter table t1 change b c int;
|
|
lock table t1 read;
|
|
# --> connection con1
|
|
flush tables;
|
|
# --> connection default
|
|
select * from information_schema.views;
|
|
TABLE_CATALOG def
|
|
TABLE_SCHEMA test
|
|
TABLE_NAME v1
|
|
VIEW_DEFINITION select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`
|
|
CHECK_OPTION NONE
|
|
IS_UPDATABLE
|
|
DEFINER root@localhost
|
|
SECURITY_TYPE DEFINER
|
|
CHARACTER_SET_CLIENT latin1
|
|
COLLATION_CONNECTION latin1_swedish_ci
|
|
Warnings:
|
|
Level Warning
|
|
Code 1356
|
|
Message View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
|
|
unlock tables;
|
|
#
|
|
# Cleanup.
|
|
#
|
|
# --> connection con1
|
|
# Reaping 'flush tables'
|
|
# --> connection default
|
|
drop table t1;
|
|
drop view v1;
|
|
#
|
|
# Test for bug #12828477 - "MDL SUBSYSTEM CREATES BIG OVERHEAD FOR
|
|
# CERTAIN QUERIES TO INFORMATION_SCHEMA".
|
|
#
|
|
# Check that metadata locks which are acquired during the process
|
|
# of opening tables/.FRMs/.TRG files while filling I_S table are
|
|
# not kept to the end of statement. Keeping the locks has caused
|
|
# performance problems in cases when big number of tables (.FRMs
|
|
# or .TRG files) were scanned as cost of new lock acquisition has
|
|
# increased linearly.
|
|
drop database if exists mysqltest;
|
|
create database mysqltest;
|
|
use mysqltest;
|
|
create table t0 (i int);
|
|
create table t1 (j int);
|
|
create table t2 (k int);
|
|
#
|
|
# Test that we don't keep locks in case when we to fill
|
|
# I_S table we perform full-blown table open.
|
|
#
|
|
# Acquire lock on 't2' so upcoming RENAME is
|
|
# blocked.
|
|
lock tables t2 read;
|
|
#
|
|
# Switching to connection 'con12828477_1'.
|
|
#
|
|
# The below RENAME should wait on 't2' while
|
|
# keeping X lock on 't1'.
|
|
rename table t1 to t3, t2 to t1, t3 to t2;
|
|
#
|
|
# Switching to connection 'con12828477_2'.
|
|
#
|
|
# Wait while the above RENAME is blocked.
|
|
# Issue query to I_S which will open 't0' and get
|
|
# blocked on 't1' because of RENAME.
|
|
select table_name, auto_increment from information_schema.tables where table_schema='mysqltest';
|
|
#
|
|
# Switching to connection 'con12828477_3'.
|
|
#
|
|
# Wait while the above SELECT is blocked.
|
|
#
|
|
# Check that it holds no lock on 't0' so it can be renamed.
|
|
rename table t0 to t4;
|
|
#
|
|
# Switching to connection 'default'.
|
|
#
|
|
#
|
|
# Unblock the first RENAME.
|
|
unlock tables;
|
|
#
|
|
# Switching to connection 'con12828477_1'.
|
|
#
|
|
# Reap the first RENAME
|
|
#
|
|
# Switching to connection 'con12828477_2'.
|
|
#
|
|
# Reap SELECT to I_S.
|
|
table_name auto_increment
|
|
t0 NULL
|
|
t1 NULL
|
|
t2 NULL
|
|
#
|
|
# Switching to connection 'default'.
|
|
#
|
|
#
|
|
# Now test that we don't keep locks in case when we to fill
|
|
# I_S table we read .FRM or .TRG file only (this was the case
|
|
# for which problem existed).
|
|
#
|
|
rename table t4 to t0;
|
|
# Acquire lock on 't2' so upcoming RENAME is
|
|
# blocked.
|
|
lock tables t2 read;
|
|
#
|
|
# Switching to connection 'con12828477_1'.
|
|
#
|
|
# The below RENAME should wait on 't2' while
|
|
# keeping X lock on 't1'.
|
|
rename table t1 to t3, t2 to t1, t3 to t2;
|
|
#
|
|
# Switching to connection 'con12828477_2'.
|
|
#
|
|
# Wait while the above RENAME is blocked.
|
|
# Issue query to I_S which will open 't0' and get
|
|
# blocked on 't1' because of RENAME.
|
|
select event_object_table, trigger_name from information_schema.triggers where event_object_schema='mysqltest';
|
|
#
|
|
# Switching to connection 'con12828477_3'.
|
|
#
|
|
# Wait while the above SELECT is blocked.
|
|
#
|
|
# Check that it holds no lock on 't0' so it can be renamed.
|
|
rename table t0 to t4;
|
|
#
|
|
# Switching to connection 'default'.
|
|
#
|
|
#
|
|
# Unblock the first RENAME.
|
|
unlock tables;
|
|
#
|
|
# Switching to connection 'con12828477_1'.
|
|
#
|
|
# Reap the first RENAME
|
|
#
|
|
# Switching to connection 'con12828477_2'.
|
|
#
|
|
# Reap SELECT to I_S.
|
|
event_object_table trigger_name
|
|
#
|
|
# Switching to connection 'default'.
|
|
#
|
|
#
|
|
# MDEV-3818: Query against view over IS tables worse than equivalent query without view
|
|
#
|
|
create view v1 as select table_schema, table_name, column_name from information_schema.columns;
|
|
explain extended
|
|
select column_name from v1
|
|
where (table_schema = "osm") and (table_name = "test");
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE columns ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL NULL Using where; Open_frm_only; Scanned 0 databases
|
|
Warnings:
|
|
Note 1003 select `information_schema`.`columns`.`COLUMN_NAME` AS `column_name` from `information_schema`.`columns` where ((`information_schema`.`columns`.`TABLE_SCHEMA` = 'osm') and (`information_schema`.`columns`.`TABLE_NAME` = 'test'))
|
|
explain extended
|
|
select information_schema.columns.column_name as column_name
|
|
from information_schema.columns
|
|
where (information_schema.columns.table_schema = 'osm') and (information_schema.columns.table_name = 'test');
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE columns ALL NULL TABLE_SCHEMA,TABLE_NAME NULL NULL NULL NULL Using where; Open_frm_only; Scanned 0 databases
|
|
Warnings:
|
|
Note 1003 select `information_schema`.`columns`.`COLUMN_NAME` AS `column_name` from `information_schema`.`columns` where ((`information_schema`.`columns`.`TABLE_SCHEMA` = 'osm') and (`information_schema`.`columns`.`TABLE_NAME` = 'test'))
|
|
drop view v1;
|
|
#
|
|
# Clean-up.
|
|
drop database mysqltest;
|
|
#
|
|
# End of 5.5 tests
|
|
#
|
|
#
|
|
# MDEV-5723: mysqldump -uroot unusable for multi-database operations, checks all databases
|
|
#
|
|
drop database if exists db1;
|
|
create database db1;
|
|
use db1;
|
|
create table t1 (a int);
|
|
create table t2 (a int);
|
|
create table t3 (a int);
|
|
create database mysqltest;
|
|
use mysqltest;
|
|
create table t1 (a int);
|
|
create table t2 (a int);
|
|
create table t3 (a int);
|
|
flush tables;
|
|
flush status;
|
|
SELECT
|
|
LOGFILE_GROUP_NAME, FILE_NAME, TOTAL_EXTENTS, INITIAL_SIZE, ENGINE, EXTRA
|
|
FROM
|
|
INFORMATION_SCHEMA.FILES
|
|
WHERE
|
|
FILE_TYPE = 'UNDO LOG' AND FILE_NAME IS NOT NULL AND
|
|
LOGFILE_GROUP_NAME IN (SELECT DISTINCT LOGFILE_GROUP_NAME
|
|
FROM INFORMATION_SCHEMA.FILES
|
|
WHERE
|
|
FILE_TYPE = 'DATAFILE' AND
|
|
TABLESPACE_NAME IN (SELECT DISTINCT TABLESPACE_NAME
|
|
FROM INFORMATION_SCHEMA.PARTITIONS
|
|
WHERE TABLE_SCHEMA IN ('db1')
|
|
)
|
|
)
|
|
GROUP BY
|
|
LOGFILE_GROUP_NAME, FILE_NAME, ENGINE
|
|
ORDER BY
|
|
LOGFILE_GROUP_NAME;
|
|
LOGFILE_GROUP_NAME FILE_NAME TOTAL_EXTENTS INITIAL_SIZE ENGINE EXTRA
|
|
# This must have Opened_tables=3, not 6.
|
|
show status like 'Opened_tables';
|
|
Variable_name Value
|
|
Opened_tables 3
|
|
drop database mysqltest;
|
|
drop database db1;
|