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mariadb/mysql-test/r/create.result
unknown c5a8245596 Fix for: 
Bug #20662 "Infinite loop in CREATE TABLE IF NOT EXISTS ... SELECT
              with locked tables"
  Bug #20903 "Crash when using CREATE TABLE .. SELECT and triggers"
  Bug #24738 "CREATE TABLE ... SELECT is not isolated properly"
  Bug #24508 "Inconsistent results of CREATE TABLE ... SELECT when
              temporary table exists"
 
Deadlock occured when one tried to execute CREATE TABLE IF NOT
EXISTS ... SELECT statement under LOCK TABLES which held
read lock on target table.
Attempt to execute the same statement for already existing
target table with triggers caused server crashes.
Also concurrent execution of CREATE TABLE ... SELECT statement
and other statements involving target table suffered from
various races (some of which might've led to deadlocks).
Finally, attempt to execute CREATE TABLE ... SELECT in case
when a temporary table with same name was already present
led to the insertion of data into this temporary table and
creation of empty non-temporary table.
 
All above problems stemmed from the old implementation of CREATE
TABLE ... SELECT in which we created, opened and locked target
table without any special protection in a separate step and not
with the rest of tables used by this statement.
This underminded deadlock-avoidance approach used in server
and created window for races. It also excluded target table
from prelocking causing problems with trigger execution.
  
The patch solves these problems by implementing new approach to
handling of CREATE TABLE ... SELECT for base tables.
We try to open and lock table to be created at the same time as
the rest of tables used by this statement. If such table does not
exist at this moment we create and place in the table cache special
placeholder for it which prevents its creation or any other usage
by other threads.

We still use old approach for creation of temporary tables.

Also note that we decided to postpone introduction of some tests
for concurrent behaviour of CREATE TABLE ... SELECT till 5.1.
The main reason for this is absence in 5.0 ability to set @@debug
variable at runtime, which can be circumvented only by using several
test files with individual .opt files. Since the latter is likely
to slowdown test-suite unnecessary we chose not to push this tests
into 5.0, but run them manually for this version and later push
their optimized version into 5.1


mysql-test/r/create.result:
  Extended test coverage for CREATE TABLE ... SELECT. In particular added
  tests for bug #24508 "Inconsistent results of CREATE TABLE ... SELECT
  when temporary table exists" and bug #20662 "Infinite loop in CREATE
  TABLE IF NOT EXISTS ... SELECT with locked tables".
mysql-test/r/trigger.result:
  Added test case for bug #20903 "Crash when using CREATE TABLE .. SELECT
  and triggers"
mysql-test/t/create.test:
  Extended test coverage for CREATE TABLE ... SELECT. In particular added
  tests for bug #24508 "Inconsistent results of CREATE TABLE ... SELECT
  when temporary table exists" and bug #20662 "Infinite loop in CREATE
  TABLE IF NOT EXISTS ... SELECT with locked tables".
mysql-test/t/trigger.test:
  Added test case for bug #20903 "Crash when using CREATE TABLE .. SELECT
  and triggers"
sql/lock.cc:
  Now for creation of name-lock placeholder in lock_table_name() we use
  auxiliary function table_cache_insert_placeholder().
sql/mysql_priv.h:
  Made build_table_path() function available outside of sql_table.cc file.
  reopen_name_locked_table() now has 3rd argument which controls linking
  in of table being opened into THD::open_tables (this is useful in
  cases when placeholder used for name-locking is already linked into
  this list).
  Added declaration of auxiliary function table_cache_insert_placeholder()
  which is used for creation of table placeholders for name-locking.
  Added declaration of table_cache_has_open_placeholder() function which
  can be used for checking if table cache contains an open placeholder for
  the table and if this placeholder was created by another thread.
  (This function is needed only in 5.0 where we use it in various versions
   of CREATE TABLE in order to protect it from concurrent CREATE TABLE
   ... SELECT operations for the table. Starting from 5.1 we use different
   approach so it is going to be removed there).
  Made close_old_data_files() static within sql_base.cc file. 
  Added auxiliary drop_open_table() routine.
  Moved declaration of refresh_version to table.h header to make it
  accessible from inline methods of TABLE class.
  MYSQL_OPEN_IGNORE_LOCKED_TABLES flag is no longer used. Instead
  MYSQL_OPEN_TEMPORARY_ONLY option was added.
sql/sql_base.cc:
  Added support for the new approach to the handling of CREATE TABLE
  ... SELECT for base tables.
  
  Now we try to open and lock table to be created at the same time as
  the rest of tables used by this statement. If such table does not
  exist at this moment we create and place in the table cache special
  placeholder for it which prevents its creation or any other usage
  by other threads.
  
  Note significant distinctions of this placeholder from the placeholder
  used for normal name-lock: 1) It is treated like open table by other
  name-locks so it does not allow name-lock taking operations like DROP
  TABLE or RENAME TABLE to proceed. 2) it is linked into THD::open_tables
  list and automatically removed during close_thread_tables() call.
  
  open_tables():
    Implemented logic described above. To do this added
    auxiliary check_if_table_exists() function.
    Removed support for MYSQL_OPEN_IGNORE_LOCKED_TABLES option
    which is no longer used.
    Added MYSQL_OPEN_TEMPORARY_ONLY which is used to restrict
    search for temporary tables only.
  close_cached_tables()/close_thread_table()/reopen_tables()/
  close_old_data_files()/table_is_used()/remove_table_from_cache():
    Added support for open placeholders (note that we also use them
    when we need to re-open tables during flush).
  Added auxiliary drop_open_table() routine.
  reopen_name_locked_table():
    Now has 3rd argument which controls linking in of table being
    opened into THD::open_tables (this is useful in cases when
    placeholder used for name-locking is already linked into
    this list).
  Added auxiliary table_cache_insert_placeholder() routine which
  simplifies creation of placeholders used for name-locking.
  Added table_cache_has_open_placeholder() function which can be
  used for checking if table cache contains an open placeholder for
  the table and if this placeholder was created by another thread.
  (This function is needed only in 5.0 where we use it in various versions
   of CREATE TABLE in order to protect it from concurrent CREATE TABLE
   ... SELECT operations for the table. Starting from 5.1 we use different
   approach so it is going to be removed there).
sql/sql_handler.cc:
  Adjusted mysql_ha_mark_tables_for_reopen() routine to properly
  handle placeholders which now can be linked into open tables
  list.
sql/sql_insert.cc:
  Introduced new approach to handling of base tables in CREATE TABLE
  ... SELECT statement.
  
  Now we try to open and lock table to be created at the same time as
  the rest of tables used by this statement. If such table does not
  exist at this moment we create and place in the table cache special
  placeholder for it which prevents its creation or any other usage
  by other threads. By doing this we avoid races which existed with
  previous approach in which we created, opened and locked target in
  separate step without any special protection.
  This also allows properly calculate prelocking set in cases when
  target table already exists and has some on insert triggers.
    
  Note that we don't employ the same approach for temporary tables
  (this is okay as such tables are unaffected by other threads).
  
  Changed create_table_from_items() and select_create methods to
  implement this approach.
sql/sql_parse.cc:
  The new approach to handling of CREATE TABLE ... SELECT for
  base tables assumes that all tables (including table to be
  created) are opened and (or) locked at the same time.
  So in cases when we create base table we have to pass to
  open_and_lock_tables() table list which includes target table.
sql/sql_prepare.cc:
  The new approach to handling of CREATE TABLE ... SELECT for
  base tables assumes that all tables (including table to be
  created) are opened and (or) locked at the same time.
  So in cases when we create base table we have to pass to
  open_and_lock_tables() table list which includes target table.
sql/sql_table.cc:
  Now mysql_create_table_internal(), mysql_create_like_table() and
  mysql_alter_table() not only check that destination table doesn't
  exist on disk but also check that there is no create placeholder
  in table cache for it (i.e. there is no CREATE TABLE ... SELECT
  operation in progress for it). Note that starting from 5.1 we
  use different approach in order to to protect CREATE TABLE ... SELECT
  from concurrent CREATE TABLE (ALTER TABLE ... RENAME) operations,
  the latter simply take name-locks on table before its creation
  (on target table name before renaming).
  
  Also made build_table_path() available from other files and
  asjusted calls to reopen_name_locked_table(), which now takes
  extra argument, which controls linking of open table into
  THD::open_tables list.
sql/sql_trigger.cc:
  reopen_name_locked_tables() now has one more argument which controls
  linking of opened table into the THD::open_tables list.
sql/sql_yacc.yy:
  The new approach to handling of CREATE TABLE ... SELECT statement
  for base tables assumes that all tables including table to be
  created are open and (or) locked at the same time. Therefore
  we need to set correct lock for target table.
sql/table.h:
  Moved declaration of refresh_version variable from mysql_priv.h
  to make it accessible from inline methods of TABLE class. 
  Renamed TABLE::locked_by_flush member to open_placeholder since
  now it is also used for taking exclusive name-lock and not only
  by flush. 
  Introduced TABLE::is_name_opened() helper method which can be used
  to distinguish TABLE instances corresponding to open tables or
  placeholders for them from closed instances (e.g. due to their old
  version). Also introduced TABLE::needs_reopen_or_name_lock() helper
  which allows to check if TABLE instance corresponds to outdated
  version of table or to name-lock placeholder.
  Introduced TABLE_LIST::create member which marks elements of
  table list corresponds to the table to be created.
  Adjusted TABLE_LIST::placeholder() method to take into account 
  name-lock placeholders for tables to be created (this, for example,
  allows to properly handle such placeholders in lock_tables()).
2007-05-11 20:33:13 +04:00

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drop table if exists t1,t2,t3,t4,t5;
drop database if exists mysqltest;
create table t1 (b char(0));
insert into t1 values (""),(null);
select * from t1;
b
NULL
drop table if exists t1;
create table t1 (b char(0) not null);
create table if not exists t1 (b char(0) not null);
Warnings:
Note 1050 Table 't1' already exists
insert into t1 values (""),(null);
Warnings:
Warning 1263 Column was set to data type implicit default; NULL supplied for NOT NULL column 'b' at row 2
select * from t1;
b
drop table t1;
create table t1 (a int not null auto_increment,primary key (a)) engine=heap;
drop table t1;
create table t2 engine=heap select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
create table t2 select auto+1 from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
drop table if exists t1,t2;
Warnings:
Note 1051 Unknown table 't1'
Note 1051 Unknown table 't2'
create table t1 (b char(0) not null, index(b));
ERROR 42000: The used storage engine can't index column 'b'
create table t1 (a int not null,b text) engine=heap;
ERROR 42000: The used table type doesn't support BLOB/TEXT columns
drop table if exists t1;
Warnings:
Note 1051 Unknown table 't1'
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid)) engine=heap;
ERROR 42000: Incorrect table definition; there can be only one auto column and it must be defined as a key
create table not_existing_database.test (a int);
ERROR 42000: Unknown database 'not_existing_database'
create table `a/a` (a int);
ERROR 42000: Incorrect table name 'a/a'
create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
ERROR 42000: Incorrect table name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
ERROR 42000: Identifier name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' is too long
create table t1 (a datetime default now());
ERROR 42000: Invalid default value for 'a'
create table t1 (a datetime on update now());
ERROR HY000: Invalid ON UPDATE clause for 'a' column
create table t1 (a int default 100 auto_increment);
ERROR 42000: Invalid default value for 'a'
create table t1 (a tinyint default 1000);
ERROR 42000: Invalid default value for 'a'
create table t1 (a varchar(5) default 'abcdef');
ERROR 42000: Invalid default value for 'a'
create table t1 (a varchar(5) default 'abcde');
insert into t1 values();
select * from t1;
a
abcde
alter table t1 alter column a set default 'abcdef';
ERROR 42000: Invalid default value for 'a'
drop table t1;
create table 1ea10 (1a20 int,1e int);
insert into 1ea10 values(1,1);
select 1ea10.1a20,1e+ 1e+10 from 1ea10;
1a20 1e+ 1e+10
1 10000000001
drop table 1ea10;
create table t1 (t1.index int);
drop table t1;
drop database if exists mysqltest;
Warnings:
Note 1008 Can't drop database 'mysqltest'; database doesn't exist
create database mysqltest;
create table mysqltest.$test1 (a$1 int, $b int, c$ int);
insert into mysqltest.$test1 values (1,2,3);
select a$1, $b, c$ from mysqltest.$test1;
a$1 $b c$
1 2 3
create table mysqltest.test2$ (a int);
drop table mysqltest.test2$;
drop database mysqltest;
create table `` (a int);
ERROR 42000: Incorrect table name ''
drop table if exists ``;
ERROR 42000: Incorrect table name ''
create table t1 (`` int);
ERROR 42000: Incorrect column name ''
create table t1 (i int, index `` (i));
ERROR 42000: Incorrect index name ''
create table t1 (a int auto_increment not null primary key, B CHAR(20));
insert into t1 (b) values ("hello"),("my"),("world");
create table t2 (key (b)) select * from t1;
explain select * from t2 where b="world";
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref B B 21 const 1 Using where
select * from t2 where b="world";
a B
3 world
drop table t1,t2;
create table t1(x varchar(50) );
create table t2 select x from t1 where 1=2;
describe t1;
Field Type Null Key Default Extra
x varchar(50) YES NULL
describe t2;
Field Type Null Key Default Extra
x varchar(50) YES NULL
drop table t2;
create table t2 select now() as a , curtime() as b, curdate() as c , 1+1 as d , 1.0 + 1 as e , 33333333333333333 + 3 as f;
describe t2;
Field Type Null Key Default Extra
a datetime NO 0000-00-00 00:00:00
b time NO 00:00:00
c date NO 0000-00-00
d int(3) NO 0
e decimal(3,1) NO 0.0
f bigint(19) NO 0
drop table t2;
create table t2 select CAST("2001-12-29" AS DATE) as d, CAST("20:45:11" AS TIME) as t, CAST("2001-12-29 20:45:11" AS DATETIME) as dt;
describe t2;
Field Type Null Key Default Extra
d date YES NULL
t time YES NULL
dt datetime YES NULL
drop table t1,t2;
create table t1 (a tinyint);
create table t2 (a int) select * from t1;
describe t1;
Field Type Null Key Default Extra
a tinyint(4) YES NULL
describe t2;
Field Type Null Key Default Extra
a int(11) YES NULL
drop table if exists t2;
create table t2 (a int, a float) select * from t1;
ERROR 42S21: Duplicate column name 'a'
drop table if exists t2;
Warnings:
Note 1051 Unknown table 't2'
create table t2 (a int) select a as b, a+1 as b from t1;
ERROR 42S21: Duplicate column name 'b'
drop table if exists t2;
Warnings:
Note 1051 Unknown table 't2'
create table t2 (b int) select a as b, a+1 as b from t1;
ERROR 42S21: Duplicate column name 'b'
drop table if exists t1,t2;
Warnings:
Note 1051 Unknown table 't2'
CREATE TABLE t1 (a int not null);
INSERT INTO t1 values (1),(2),(1);
CREATE TABLE t2 (primary key(a)) SELECT * FROM t1;
ERROR 23000: Duplicate entry '1' for key 1
SELECT * from t2;
ERROR 42S02: Table 'test.t2' doesn't exist
DROP TABLE t1;
DROP TABLE IF EXISTS t2;
Warnings:
Note 1051 Unknown table 't2'
create table t1 (a int not null, b int, primary key(a), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` int(11) default NULL,
PRIMARY KEY (`a`),
KEY `b` (`b`),
KEY `b_2` (`b`),
KEY `b_3` (`b`),
KEY `b_4` (`b`),
KEY `b_5` (`b`),
KEY `b_6` (`b`),
KEY `b_7` (`b`),
KEY `b_8` (`b`),
KEY `b_9` (`b`),
KEY `b_10` (`b`),
KEY `b_11` (`b`),
KEY `b_12` (`b`),
KEY `b_13` (`b`),
KEY `b_14` (`b`),
KEY `b_15` (`b`),
KEY `b_16` (`b`),
KEY `b_17` (`b`),
KEY `b_18` (`b`),
KEY `b_19` (`b`),
KEY `b_20` (`b`),
KEY `b_21` (`b`),
KEY `b_22` (`b`),
KEY `b_23` (`b`),
KEY `b_24` (`b`),
KEY `b_25` (`b`),
KEY `b_26` (`b`),
KEY `b_27` (`b`),
KEY `b_28` (`b`),
KEY `b_29` (`b`),
KEY `b_30` (`b`),
KEY `b_31` (`b`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 select if(1,'1','0'), month("2002-08-02");
drop table t1;
create table t1 select if('2002'='2002','Y','N');
select * from t1;
if('2002'='2002','Y','N')
Y
drop table if exists t1;
SET SESSION storage_engine="heap";
SELECT @@storage_engine;
@@storage_engine
MEMORY
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
drop table t1;
SET SESSION storage_engine="gemini";
ERROR 42000: Unknown table engine 'gemini'
SELECT @@storage_engine;
@@storage_engine
MEMORY
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
SET SESSION storage_engine=default;
drop table t1;
create table t1 ( k1 varchar(2), k2 int, primary key(k1,k2));
insert into t1 values ("a", 1), ("b", 2);
insert into t1 values ("c", NULL);
ERROR 23000: Column 'k2' cannot be null
insert into t1 values (NULL, 3);
ERROR 23000: Column 'k1' cannot be null
insert into t1 values (NULL, NULL);
ERROR 23000: Column 'k1' cannot be null
drop table t1;
create table t1 select x'4132';
drop table t1;
create table t1 select 1,2,3;
create table if not exists t1 select 1,2;
Warnings:
Note 1050 Table 't1' already exists
create table if not exists t1 select 1,2,3,4;
ERROR 21S01: Column count doesn't match value count at row 1
create table if not exists t1 select 1;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
1 2 3
1 2 3
0 1 2
0 0 1
drop table t1;
create table t1 (a int not null, b int, primary key (a));
insert into t1 values (1,1);
create table if not exists t1 select 2;
Warnings:
Note 1050 Table 't1' already exists
Warning 1364 Field 'a' doesn't have a default value
select * from t1;
a b
1 1
0 2
create table if not exists t1 select 3 as 'a',4 as 'b';
Warnings:
Note 1050 Table 't1' already exists
create table if not exists t1 select 3 as 'a',3 as 'b';
ERROR 23000: Duplicate entry '3' for key 1
select * from t1;
a b
1 1
0 2
3 4
drop table t1;
create table `t1 `(a int);
ERROR 42000: Incorrect table name 't1 '
create database `db1 `;
ERROR 42000: Incorrect database name 'db1 '
create table t1(`a ` int);
ERROR 42000: Incorrect column name 'a '
create table t1 (a int,);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
create table t1 (a int,,b int);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b int)' at line 1
create table t1 (,b int);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b int)' at line 1
create table t1 (a int, key(a));
create table t2 (b int, foreign key(b) references t1(a), key(b));
drop table if exists t1,t2;
create table t1(id int not null, name char(20));
insert into t1 values(10,'mysql'),(20,'monty- the creator');
create table t2(id int not null);
insert into t2 values(10),(20);
create table t3 like t1;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`id` int(11) NOT NULL,
`name` char(20) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t3;
id name
create table if not exists t3 like t1;
Warnings:
Note 1050 Table 't3' already exists
select @@warning_count;
@@warning_count
1
create temporary table t3 like t2;
show create table t3;
Table Create Table
t3 CREATE TEMPORARY TABLE `t3` (
`id` int(11) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t3;
id
drop table t3;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`id` int(11) NOT NULL,
`name` char(20) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t3;
id name
drop table t2, t3;
create database mysqltest;
create table mysqltest.t3 like t1;
create temporary table t3 like mysqltest.t3;
show create table t3;
Table Create Table
t3 CREATE TEMPORARY TABLE `t3` (
`id` int(11) NOT NULL,
`name` char(20) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t2 like t3;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`id` int(11) NOT NULL,
`name` char(20) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t2;
id name
create table t3 like t1;
create table t3 like mysqltest.t3;
ERROR 42S01: Table 't3' already exists
create table non_existing_database.t1 like t1;
ERROR 42000: Unknown database 'non_existing_database'
create table t3 like non_existing_table;
ERROR 42S02: Unknown table 'non_existing_table'
create temporary table t3 like t1;
ERROR 42S01: Table 't3' already exists
create table t3 like `a/a`;
ERROR 42000: Incorrect table name 'a/a'
drop table t1, t2, t3;
drop table t3;
drop database mysqltest;
SET SESSION storage_engine="heap";
SELECT @@storage_engine;
@@storage_engine
MEMORY
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
drop table t1;
SET SESSION storage_engine="gemini";
ERROR 42000: Unknown table engine 'gemini'
SELECT @@storage_engine;
@@storage_engine
MEMORY
CREATE TABLE t1 (a int not null);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
SET SESSION storage_engine=default;
drop table t1;
create table t1(a int,b int,c int unsigned,d date,e char,f datetime,g time,h blob);
insert into t1(a)values(1);
insert into t1(a,b,c,d,e,f,g,h)
values(2,-2,2,'1825-12-14','a','2003-1-1 3:2:1','4:3:2','binary data');
select * from t1;
a b c d e f g h
1 NULL NULL NULL NULL NULL NULL NULL
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data
select a,
ifnull(b,cast(-7 as signed)) as b,
ifnull(c,cast(7 as unsigned)) as c,
ifnull(d,cast('2000-01-01' as date)) as d,
ifnull(e,cast('b' as char)) as e,
ifnull(f,cast('2000-01-01' as datetime)) as f,
ifnull(g,cast('5:4:3' as time)) as g,
ifnull(h,cast('yet another binary data' as binary)) as h,
addtime(cast('1:0:0' as time),cast('1:0:0' as time)) as dd
from t1;
a b c d e f g h dd
1 -7 7 2000-01-01 b 2000-01-01 00:00:00 05:04:03 yet another binary data 02:00:00
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data 02:00:00
create table t2
select
a,
ifnull(b,cast(-7 as signed)) as b,
ifnull(c,cast(7 as unsigned)) as c,
ifnull(d,cast('2000-01-01' as date)) as d,
ifnull(e,cast('b' as char)) as e,
ifnull(f,cast('2000-01-01' as datetime)) as f,
ifnull(g,cast('5:4:3' as time)) as g,
ifnull(h,cast('yet another binary data' as binary)) as h,
addtime(cast('1:0:0' as time),cast('1:0:0' as time)) as dd
from t1;
explain t2;
Field Type Null Key Default Extra
a int(11) YES NULL
b bigint(11) NO 0
c bigint(11) NO 0
d date YES NULL
e varchar(1) NO
f datetime YES NULL
g time YES NULL
h longblob NO
dd time YES NULL
select * from t2;
a b c d e f g h dd
1 -7 7 2000-01-01 b 2000-01-01 00:00:00 05:04:03 yet another binary data 02:00:00
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data 02:00:00
drop table t1, t2;
create table t1 (a tinyint, b smallint, c mediumint, d int, e bigint, f float(3,2), g double(4,3), h decimal(5,4), i year, j date, k timestamp, l datetime, m enum('a','b'), n set('a','b'), o char(10));
create table t2 select ifnull(a,a), ifnull(b,b), ifnull(c,c), ifnull(d,d), ifnull(e,e), ifnull(f,f), ifnull(g,g), ifnull(h,h), ifnull(i,i), ifnull(j,j), ifnull(k,k), ifnull(l,l), ifnull(m,m), ifnull(n,n), ifnull(o,o) from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`ifnull(a,a)` tinyint(4) default NULL,
`ifnull(b,b)` smallint(6) default NULL,
`ifnull(c,c)` mediumint(8) default NULL,
`ifnull(d,d)` int(11) default NULL,
`ifnull(e,e)` bigint(20) default NULL,
`ifnull(f,f)` float(3,2) default NULL,
`ifnull(g,g)` double(4,3) default NULL,
`ifnull(h,h)` decimal(5,4) default NULL,
`ifnull(i,i)` year(4) default NULL,
`ifnull(j,j)` date default NULL,
`ifnull(k,k)` timestamp NOT NULL default '0000-00-00 00:00:00',
`ifnull(l,l)` datetime default NULL,
`ifnull(m,m)` varchar(1) default NULL,
`ifnull(n,n)` varchar(3) default NULL,
`ifnull(o,o)` varchar(10) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1,t2;
create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
insert into t1 values ('','',0,0.0);
describe t1;
Field Type Null Key Default Extra
str varchar(10) YES def
strnull varchar(10) YES NULL
intg int(11) YES 10
rel double YES 3.14
create table t2 select default(str) as str, default(strnull) as strnull, default(intg) as intg, default(rel) as rel from t1;
describe t2;
Field Type Null Key Default Extra
str varchar(10) YES NULL
strnull varchar(10) YES NULL
intg int(11) YES NULL
rel double YES NULL
drop table t1, t2;
create table t1(name varchar(10), age smallint default -1);
describe t1;
Field Type Null Key Default Extra
name varchar(10) YES NULL
age smallint(6) YES -1
create table t2(name varchar(10), age smallint default - 1);
describe t2;
Field Type Null Key Default Extra
name varchar(10) YES NULL
age smallint(6) YES -1
drop table t1, t2;
create table t1(cenum enum('a'), cset set('b'));
create table t2(cenum enum('a','a'), cset set('b','b'));
Warnings:
Note 1291 Column 'cenum' has duplicated value 'a' in ENUM
Note 1291 Column 'cset' has duplicated value 'b' in SET
create table t3(cenum enum('a','A','a','c','c'), cset set('b','B','b','d','d'));
Warnings:
Note 1291 Column 'cenum' has duplicated value 'a' in ENUM
Note 1291 Column 'cenum' has duplicated value 'A' in ENUM
Note 1291 Column 'cenum' has duplicated value 'c' in ENUM
Note 1291 Column 'cset' has duplicated value 'b' in SET
Note 1291 Column 'cset' has duplicated value 'B' in SET
Note 1291 Column 'cset' has duplicated value 'd' in SET
drop table t1, t2, t3;
create database mysqltest;
use mysqltest;
select database();
database()
mysqltest
drop database mysqltest;
select database();
database()
NULL
create user mysqltest_1;
select database(), user();
database() user()
NULL mysqltest_1@localhost
drop user mysqltest_1;
use test;
create table t1 (a int, index `primary` (a));
ERROR 42000: Incorrect index name 'primary'
create table t1 (a int, index `PRIMARY` (a));
ERROR 42000: Incorrect index name 'PRIMARY'
create table t1 (`primary` int, index(`primary`));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`primary` int(11) default NULL,
KEY `primary_2` (`primary`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t2 (`PRIMARY` int, index(`PRIMARY`));
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`PRIMARY` int(11) default NULL,
KEY `PRIMARY_2` (`PRIMARY`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t3 (a int);
alter table t3 add index `primary` (a);
ERROR 42000: Incorrect index name 'primary'
alter table t3 add index `PRIMARY` (a);
ERROR 42000: Incorrect index name 'PRIMARY'
create table t4 (`primary` int);
alter table t4 add index(`primary`);
show create table t4;
Table Create Table
t4 CREATE TABLE `t4` (
`primary` int(11) default NULL,
KEY `primary_2` (`primary`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t5 (`PRIMARY` int);
alter table t5 add index(`PRIMARY`);
show create table t5;
Table Create Table
t5 CREATE TABLE `t5` (
`PRIMARY` int(11) default NULL,
KEY `PRIMARY_2` (`PRIMARY`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2, t3, t4, t5;
CREATE TABLE t1(id varchar(10) NOT NULL PRIMARY KEY, dsc longtext);
INSERT INTO t1 VALUES ('5000000001', NULL),('5000000003', 'Test'),('5000000004', NULL);
CREATE TABLE t2(id varchar(15) NOT NULL, proc varchar(100) NOT NULL, runID varchar(16) NOT NULL, start datetime NOT NULL, PRIMARY KEY (id,proc,runID,start));
INSERT INTO t2 VALUES ('5000000001', 'proc01', '20031029090650', '2003-10-29 13:38:40'),('5000000001', 'proc02', '20031029090650', '2003-10-29 13:38:51'),('5000000001', 'proc03', '20031029090650', '2003-10-29 13:38:11'),('5000000002', 'proc09', '20031024013310', '2003-10-24 01:33:11'),('5000000002', 'proc09', '20031024153537', '2003-10-24 15:36:04'),('5000000004', 'proc01', '20031024013641', '2003-10-24 01:37:29'),('5000000004', 'proc02', '20031024013641', '2003-10-24 01:37:39');
CREATE TABLE t3 SELECT t1.dsc,COUNT(DISTINCT t2.id) AS countOfRuns FROM t1 LEFT JOIN t2 ON (t1.id=t2.id) GROUP BY t1.id;
SELECT * FROM t3;
dsc countOfRuns
NULL 1
Test 0
NULL 1
drop table t1, t2, t3;
create table t1 (b bool not null default false);
create table t2 (b bool not null default true);
insert into t1 values ();
insert into t2 values ();
select * from t1;
b
0
select * from t2;
b
1
drop table t1,t2;
create table t1 (a int);
create table t1 select * from t1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
create table t2 union = (t1) select * from t1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
flush tables with read lock;
unlock tables;
drop table t1;
create table t1(column.name int);
ERROR 42000: Incorrect table name 'column'
create table t1(test.column.name int);
ERROR 42000: Incorrect table name 'column'
create table t1(xyz.t1.name int);
ERROR 42000: Incorrect database name 'xyz'
create table t1(t1.name int);
create table t2(test.t2.name int);
drop table t1,t2;
CREATE TABLE t1 (f1 VARCHAR(255) CHARACTER SET utf8);
CREATE TABLE t2 AS SELECT LEFT(f1,171) AS f2 FROM t1 UNION SELECT LEFT(f1,171) AS f2 FROM t1;
DESC t2;
Field Type Null Key Default Extra
f2 varchar(171) YES NULL
DROP TABLE t1,t2;
CREATE TABLE t12913 (f1 ENUM ('a','b')) AS SELECT 'a' AS f1;
SELECT * FROM t12913;
f1
a
DROP TABLE t12913;
create database mysqltest;
use mysqltest;
drop database mysqltest;
create table test.t1 like x;
ERROR 3D000: No database selected
drop table if exists test.t1;
create database mysqltest;
use mysqltest;
create view v1 as select 'foo' from dual;
create table t1 like v1;
ERROR HY000: 'mysqltest.v1' is not BASE TABLE
drop view v1;
drop database mysqltest;
create database mysqltest;
create database if not exists mysqltest character set latin2;
Warnings:
Note 1007 Can't create database 'mysqltest'; database exists
show create database mysqltest;
Database Create Database
mysqltest CREATE DATABASE `mysqltest` /*!40100 DEFAULT CHARACTER SET latin1 */
drop database mysqltest;
use test;
create table t1 (a int);
create table if not exists t1 (a int);
Warnings:
Note 1050 Table 't1' already exists
drop table t1;
create table t1 (
a varchar(112) charset utf8 collate utf8_bin not null,
primary key (a)
) select 'test' as a ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` varchar(112) character set utf8 collate utf8_bin NOT NULL,
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
CREATE TABLE t2 (
a int(11) default NULL
);
insert into t2 values(111);
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int not null, primary key (a)
) select a, 1 as b from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` varchar(12) character set utf8 collate utf8_bin NOT NULL,
`b` int(11) NOT NULL,
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int not null, primary key (a)
) select a, 1 as c from t2 ;
Warnings:
Warning 1364 Field 'b' doesn't have a default value
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`b` int(11) NOT NULL,
`a` varchar(12) character set utf8 collate utf8_bin NOT NULL,
`c` int(1) NOT NULL default '0',
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int null, primary key (a)
) select a, 1 as c from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`b` int(11) default NULL,
`a` varchar(12) character set utf8 collate utf8_bin NOT NULL,
`c` int(1) NOT NULL default '0',
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin not null,
b int not null, primary key (a)
) select 'a' as a , 1 as b from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` varchar(12) character set utf8 collate utf8_bin NOT NULL,
`b` int(11) NOT NULL,
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (
a varchar(12) charset utf8 collate utf8_bin,
b int not null, primary key (a)
) select 'a' as a , 1 as b from t2 ;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` varchar(12) character set utf8 collate utf8_bin NOT NULL default '',
`b` int(11) NOT NULL,
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2;
create table t1 (
a1 int not null,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int
);
insert into t1 values (1,1,1, 1,1,1, 1,1,1);
create table t2 (
a1 varchar(12) charset utf8 collate utf8_bin not null,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int,
primary key (a1)
) select a1,a2,a3,a4,a5,a6,a7,a8,a9 from t1 ;
drop table t2;
create table t2 (
a1 varchar(12) charset utf8 collate utf8_bin,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int
) select a1,a2,a3,a4,a5,a6,a7,a8,a9 from t1;
drop table t1, t2;
create table t1 (
a1 int, a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int
);
insert into t1 values (1,1,1, 1,1,1, 1,1,1);
create table t2 (
a1 varchar(12) charset utf8 collate utf8_bin not null,
a2 int, a3 int, a4 int, a5 int, a6 int, a7 int, a8 int, a9 int,
primary key (a1)
) select a1,a2,a3,a4,a5,a6,a7,a8,a9 from t1 ;
drop table t2;
create table t2 ( a int default 3, b int default 3)
select a1,a2 from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` int(11) default '3',
`b` int(11) default '3',
`a1` int(11) default NULL,
`a2` int(11) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2;
create table t1(a set("a,b","c,d") not null);
ERROR 22007: Illegal set 'a,b' value found during parsing
create table t1 (i int) engine=myisam max_rows=100000000000;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`i` int(11) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=4294967295
alter table t1 max_rows=100;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`i` int(11) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=100
alter table t1 max_rows=100000000000;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`i` int(11) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=4294967295
drop table t1;
create table t1 select * from t2;
ERROR 42S02: Table 'test.t2' doesn't exist
create table t1 select * from t1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
create table t1 select coalesce('a' collate latin1_swedish_ci,'b' collate latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'coalesce'
create table t1 (primary key(a)) select "b" as b;
ERROR 42000: Key column 'a' doesn't exist in table
create table t1 (a int);
create table if not exists t1 select 1 as a, 2 as b;
ERROR 21S01: Column count doesn't match value count at row 1
drop table t1;
create table t1 (primary key (a)) (select 1 as a) union all (select 1 as a);
ERROR 23000: Duplicate entry '1' for key 1
create table t1 (i int);
create table t1 select 1 as i;
ERROR 42S01: Table 't1' already exists
create table if not exists t1 select 1 as i;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
i
1
create table t1 select coalesce('a' collate latin1_swedish_ci,'b' collate latin1_bin);
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,EXPLICIT) and (latin1_bin,EXPLICIT) for operation 'coalesce'
select * from t1;
i
1
alter table t1 add primary key (i);
create table if not exists t1 (select 2 as i) union all (select 2 as i);
ERROR 23000: Duplicate entry '2' for key 1
select * from t1;
i
1
2
drop table t1;
create temporary table t1 (j int);
create table if not exists t1 select 1;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
j
1
drop temporary table t1;
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
drop table t1;
ERROR 42S02: Unknown table 't1'
create table t1 (i int);
insert into t1 values (1), (2);
lock tables t1 read;
create table t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
create table if not exists t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
create table t2 (j int);
lock tables t1 read;
create table t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
create table if not exists t2 select * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
lock table t1 read, t2 read;
create table t2 select * from t1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
create table if not exists t2 select * from t1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
unlock tables;
lock table t1 read, t2 write;
create table t2 select * from t1;
ERROR 42S01: Table 't2' already exists
create table if not exists t2 select * from t1;
Warnings:
Note 1050 Table 't2' already exists
select * from t1;
i
1
2
unlock tables;
drop table t2;
lock tables t1 read;
create temporary table t2 select * from t1;
create temporary table if not exists t2 select * from t1;
Warnings:
Note 1050 Table 't2' already exists
select * from t2;
i
1
2
1
2
unlock tables;
drop table t1, t2;
create table t1 (upgrade int);
drop table t1;
End of 5.0 tests
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