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mariadb/mysql-test/r/ps.result
unknown d6bcbfbe92 A fix and a test case for 
Bug#19022 "Memory bug when switching db during trigger execution"
 Bug#17199 "Problem when view calls function from another database."
 Bug#18444 "Fully qualified stored function names don't work correctly in
            SELECT statements"

 Documentation note: this patch introduces a change in behaviour of prepared
 statements.

 This patch adds a few new invariants with regard to how THD::db should
 be used. These invariants should be preserved in future:

  - one should never refer to THD::db by pointer and always make a deep copy
    (strmake, strdup)
  - one should never compare two databases by pointer, but use strncmp or
    my_strncasecmp
  - TABLE_LIST object table->db should be always initialized in the parser or
    by creator of the object.

    For prepared statements it means that if the current database is changed
    after a statement is prepared, the database that was current at prepare
    remains active. This also means that you can not prepare a statement that
    implicitly refers to the current database if the latter is not set.
    This is not documented, and therefore needs documentation. This is NOT a
    change in behavior for almost all SQL statements except:
     - ALTER TABLE t1 RENAME t2 
     - OPTIMIZE TABLE t1
     - ANALYZE TABLE t1
     - TRUNCATE TABLE t1 --
     until this patch t1 or t2 could be evaluated at the first execution of
     prepared statement. 

     CURRENT_DATABASE() still works OK and is evaluated at every execution
     of prepared statement.

     Note, that in stored routines this is not an issue as the default
     database is the database of the stored procedure and "use" statement
     is prohibited in stored routines.

  This patch makes obsolete the use of check_db_used (it was never used in the
  old code too) and all other places that check for table->db and assign it
  from THD::db if it's NULL, except the parser.

 How this patch was created: THD::{db,db_length} were replaced with a
 LEX_STRING, THD::db. All the places that refer to THD::{db,db_length} were
 manually checked and:
  - if the place uses thd->db by pointer, it was fixed to make a deep copy
  - if a place compared two db pointers, it was fixed to compare them by value
    (via strcmp/my_strcasecmp, whatever was approproate)
 Then this intermediate patch was used to write a smaller patch that does the
 same thing but without a rename.

 TODO in 5.1:
   - remove check_db_used
   - deploy THD::set_db in mysql_change_db

 See also comments to individual files.


mysql-test/r/create.result:
  Modify the result file: a database can never be NULL.
mysql-test/r/ps.result:
  Update test results (Bug#17199 et al)
mysql-test/r/sp.result:
  Update test results (Bug#17199 et al)
mysql-test/t/create.test:
  Update the id of the returned error.
mysql-test/t/ps.test:
  Add test coverage for prepared statements and current database. In scope of
  work on Bug#17199 "Problem when view calls function from another database."
mysql-test/t/sp.test:
  Add a test case for Bug#17199 "Problem when view calls function from another
  database." and Bug#18444 "Fully qualified stored function names don't work
  correctly in SELECT statements". Test a complementary problem.
sql/item_strfunc.cc:
  Touch the code that reads thd->db (cleanup).
sql/log_event.cc:
  While we are at it, replace direct access to thd->db with a method.
  Should simplify future conversion of THD::db to LEX_STRING.
sql/slave.cc:
  While we are at it, replace direct access to thd->db with a method.
  Should simplify future conversion of THD::db to LEX_STRING.
sql/slave.h:
  Remove a declaration for a method that is used only in one module.
sql/sp.cc:
  Rewrite sp_use_new_db: this is a cleanup that I needed in order to understand
  this function and ensure that it has no bugs.
sql/sp.h:
  Add a new declaration for sp_use_new_db (uses LEX_STRINGs) and a comment.
sql/sp_head.cc:
  - drop sp_name_current_db_new - a creator of sp_name class that was used
  when sp_name was created for an identifier without an explicitly initialized
  database. Now we pass thd->db to constructor of sp_name right in the 
  parser.
  - rewrite sp_head::init_strings: name->m_db is always set now
  - use the new variant of sp_use_new_db
  - we don't need to update thd->db with SP MEM_ROOT pointer anymore when
  parsing a stored procedure, as noone will refer to it (yes!)
sql/sp_head.h:
  - remove unneded methods and members
sql/sql_class.h:
  - introduce 3 THD  methods to work with THD::db:
    .set_db to assign the current database
    .reset_db to reset the current database (temporarily) or set it to NULL
    .opt_copy_db_to - to deep-copy thd->db to a pointer if it's not NULL
sql/sql_db.cc:
  While we are at it, replace direct access to thd->db with a method.
  Should simplify future conversion of THD::db to LEX_STRING.
sql/sql_insert.cc:
  - replace checks with asserts: table_list->db must be always set in the parser.
sql/sql_lex.h:
  - add a comment
sql/sql_parse.cc:
  - implement the invariant described in the changeset comment.
  - remove juggling with lex->sphead in SQLCOM_CREATE_PROCEDURE:
    now db_load_routine uses its own LEX object and doesn't damage the main
    LEX.
  - add DBUG_ASSERT(0) to unused "check_db_used"
sql/sql_table.cc:
  - replace a check with an assert (table_ident->db)
sql/sql_trigger.cc:
  While we are at it, replace direct access to thd->db with a method.
  Should simplify future conversion of THD::db to LEX_STRING.
sql/sql_udf.cc:
  - use thd->set_db instead of direct modification of to thd->db
sql/sql_view.cc:
  - replace a check with an assert (view->db)
sql/sql_yacc.yy:
  - make sure that we always copy table->db or name->db or ident->db or
    select_lex->db from thd->db if the former is not set. If thd->db
    is not set but is accessed, return an error.
sql/tztime.cc:
  - be nice, never copy thd->db by pointer.
2006-06-27 00:47:52 +04:00

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drop table if exists t1,t2;
drop database if exists client_test_db;
create table t1
(
a int primary key,
b char(10)
);
insert into t1 values (1,'one');
insert into t1 values (2,'two');
insert into t1 values (3,'three');
insert into t1 values (4,'four');
set @a=2;
prepare stmt1 from 'select * from t1 where a <= ?';
execute stmt1 using @a;
a b
1 one
2 two
set @a=3;
execute stmt1 using @a;
a b
1 one
2 two
3 three
deallocate prepare no_such_statement;
ERROR HY000: Unknown prepared statement handler (no_such_statement) given to DEALLOCATE PREPARE
execute stmt1;
ERROR HY000: Incorrect arguments to EXECUTE
prepare stmt2 from 'prepare nested_stmt from "select 1"';
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 '"select 1"' at line 1
prepare stmt2 from 'execute stmt1';
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 'stmt1' at line 1
prepare stmt2 from 'deallocate prepare z';
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 'z' at line 1
prepare stmt3 from 'insert into t1 values (?,?)';
set @arg1=5, @arg2='five';
execute stmt3 using @arg1, @arg2;
select * from t1 where a>3;
a b
4 four
5 five
prepare stmt4 from 'update t1 set a=? where b=?';
set @arg1=55, @arg2='five';
execute stmt4 using @arg1, @arg2;
select * from t1 where a>3;
a b
4 four
55 five
prepare stmt4 from 'create table t2 (a int)';
execute stmt4;
prepare stmt4 from 'drop table t2';
execute stmt4;
execute stmt4;
ERROR 42S02: Unknown table 't2'
prepare stmt5 from 'select ? + a from t1';
set @a=1;
execute stmt5 using @a;
? + a
2
3
4
5
56
execute stmt5 using @no_such_var;
? + a
NULL
NULL
NULL
NULL
NULL
set @nullvar=1;
set @nullvar=NULL;
execute stmt5 using @nullvar;
? + a
NULL
NULL
NULL
NULL
NULL
set @nullvar2=NULL;
execute stmt5 using @nullvar2;
? + a
NULL
NULL
NULL
NULL
NULL
prepare stmt6 from 'select 1; select2';
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 '; select2' at line 1
prepare stmt6 from 'insert into t1 values (5,"five"); select2';
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 '; select2' at line 1
explain prepare stmt6 from 'insert into t1 values (5,"five"); select2';
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 'from 'insert into t1 values (5,"five"); select2'' at line 1
create table t2
(
a int
);
insert into t2 values (0);
set @arg00=NULL ;
prepare stmt1 from 'select 1 FROM t2 where a=?' ;
execute stmt1 using @arg00 ;
1
prepare stmt1 from @nosuchvar;
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 'NULL' at line 1
set @ivar= 1234;
prepare stmt1 from @ivar;
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 '1234' at line 1
set @fvar= 123.4567;
prepare stmt1 from @fvar;
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 '123.4567' at line 1
drop table t1,t2;
deallocate prepare stmt3;
deallocate prepare stmt4;
deallocate prepare stmt5;
PREPARE stmt1 FROM "select _utf8 'A' collate utf8_bin = ?";
set @var='A';
EXECUTE stmt1 USING @var;
_utf8 'A' collate utf8_bin = ?
1
DEALLOCATE PREPARE stmt1;
create table t1 (id int);
prepare stmt1 from "select FOUND_ROWS()";
select SQL_CALC_FOUND_ROWS * from t1;
id
execute stmt1;
FOUND_ROWS()
0
insert into t1 values (1);
select SQL_CALC_FOUND_ROWS * from t1;
id
1
execute stmt1;
FOUND_ROWS()
1
execute stmt1;
FOUND_ROWS()
1
deallocate prepare stmt1;
drop table t1;
create table t1
(
c1 tinyint, c2 smallint, c3 mediumint, c4 int,
c5 integer, c6 bigint, c7 float, c8 double,
c9 double precision, c10 real, c11 decimal(7, 4), c12 numeric(8, 4),
c13 date, c14 datetime, c15 timestamp, c16 time,
c17 year, c18 bit, c19 bool, c20 char,
c21 char(10), c22 varchar(30), c23 tinyblob, c24 tinytext,
c25 blob, c26 text, c27 mediumblob, c28 mediumtext,
c29 longblob, c30 longtext, c31 enum('one', 'two', 'three'),
c32 set('monday', 'tuesday', 'wednesday')
) engine = MYISAM ;
create table t2 like t1;
set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ;
prepare stmt1 from @stmt ;
execute stmt1 ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
6 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
5 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
4 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
execute stmt1 ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
6 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
5 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
4 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
6 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
5 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
4 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
deallocate prepare stmt1;
drop tables t1,t2;
set @arg00=1;
prepare stmt1 from ' create table t1 (m int) as select 1 as m ' ;
execute stmt1 ;
select m from t1;
m
1
drop table t1;
prepare stmt1 from ' create table t1 (m int) as select ? as m ' ;
execute stmt1 using @arg00;
select m from t1;
m
1
deallocate prepare stmt1;
drop table t1;
create table t1 (id int(10) unsigned NOT NULL default '0',
name varchar(64) NOT NULL default '',
PRIMARY KEY (id), UNIQUE KEY `name` (`name`));
insert into t1 values (1,'1'),(2,'2'),(3,'3'),(4,'4'),(5,'5'),(6,'6'),(7,'7');
prepare stmt1 from 'select name from t1 where id=? or id=?';
set @id1=1,@id2=6;
execute stmt1 using @id1, @id2;
name
1
6
select name from t1 where id=1 or id=6;
name
1
6
deallocate prepare stmt1;
drop table t1;
create table t1 ( a int primary key, b varchar(30)) engine = MYISAM ;
prepare stmt1 from ' show table status from test like ''t1%'' ';
execute stmt1;
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 Dynamic 0 0 0 4294967295 1024 0 NULL # # # latin1_swedish_ci NULL
show table status from test like 't1%' ;
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 Dynamic 0 0 0 4294967295 1024 0 NULL # # # latin1_swedish_ci NULL
deallocate prepare stmt1 ;
drop table t1;
create table t1(a varchar(2), b varchar(3));
prepare stmt1 from "select a, b from t1 where (not (a='aa' and b < 'zzz'))";
execute stmt1;
a b
execute stmt1;
a b
deallocate prepare stmt1;
drop table t1;
prepare stmt1 from "select 1 into @var";
execute stmt1;
execute stmt1;
prepare stmt1 from "create table t1 select 1 as i";
execute stmt1;
drop table t1;
execute stmt1;
prepare stmt1 from "insert into t1 select i from t1";
execute stmt1;
execute stmt1;
prepare stmt1 from "select * from t1 into outfile 'f1.txt'";
execute stmt1;
deallocate prepare stmt1;
drop table t1;
prepare stmt1 from 'select 1';
prepare STMT1 from 'select 2';
execute sTmT1;
2
2
deallocate prepare StMt1;
deallocate prepare Stmt1;
ERROR HY000: Unknown prepared statement handler (Stmt1) given to DEALLOCATE PREPARE
set names utf8;
prepare `ü` from 'select 1234';
execute `ü` ;
1234
1234
set names latin1;
execute `<60>`;
1234
1234
deallocate prepare `<60>`;
set names default;
create table t1 (a varchar(10)) charset=utf8;
insert into t1 (a) values ('yahoo');
set character_set_connection=latin1;
prepare stmt from 'select a from t1 where a like ?';
set @var='google';
execute stmt using @var;
a
execute stmt using @var;
a
deallocate prepare stmt;
drop table t1;
create table t1 (a bigint(20) not null primary key auto_increment);
insert into t1 (a) values (null);
select * from t1;
a
1
prepare stmt from "insert into t1 (a) values (?)";
set @var=null;
execute stmt using @var;
select * from t1;
a
1
2
drop table t1;
create table t1 (a timestamp not null);
prepare stmt from "insert into t1 (a) values (?)";
execute stmt using @var;
select * from t1;
deallocate prepare stmt;
drop table t1;
prepare stmt from "select 'abc' like convert('abc' using utf8)";
execute stmt;
'abc' like convert('abc' using utf8)
1
execute stmt;
'abc' like convert('abc' using utf8)
1
deallocate prepare stmt;
create table t1 ( a bigint );
prepare stmt from 'select a from t1 where a between ? and ?';
set @a=1;
execute stmt using @a, @a;
a
execute stmt using @a, @a;
a
execute stmt using @a, @a;
a
drop table t1;
deallocate prepare stmt;
create table t1 (a int);
prepare stmt from "select * from t1 where 1 > (1 in (SELECT * FROM t1))";
execute stmt;
a
execute stmt;
a
execute stmt;
a
drop table t1;
deallocate prepare stmt;
create table t1 (a int, b int);
insert into t1 (a, b) values (1,1), (1,2), (2,1), (2,2);
prepare stmt from
"explain select * from t1 where t1.a=2 and t1.a=t1.b and t1.b > 1 + ?";
set @v=5;
execute stmt using @v;
id select_type table type possible_keys key key_len ref rows Extra
- - - - - - - - NULL Impossible WHERE
set @v=0;
execute stmt using @v;
id select_type table type possible_keys key key_len ref rows Extra
- - - - - - - - 4 Using where
set @v=5;
execute stmt using @v;
id select_type table type possible_keys key key_len ref rows Extra
- - - - - - - - NULL Impossible WHERE
drop table t1;
deallocate prepare stmt;
create table t1 (a int);
insert into t1 (a) values (1), (2), (3), (4);
set @precision=10000000000;
select rand(),
cast(rand(10)*@precision as unsigned integer) from t1;
rand() cast(rand(10)*@precision as unsigned integer)
- 6570515220
- 1282061302
- 6698761160
- 9647622201
prepare stmt from
"select rand(),
cast(rand(10)*@precision as unsigned integer),
cast(rand(?)*@precision as unsigned integer) from t1";
set @var=1;
execute stmt using @var;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer)
- 6570515220 -
- 1282061302 -
- 6698761160 -
- 9647622201 -
set @var=2;
execute stmt using @var;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer)
- 6570515220 6555866465
- 1282061302 1223466193
- 6698761160 6449731874
- 9647622201 8578261098
set @var=3;
execute stmt using @var;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer)
- 6570515220 9057697560
- 1282061302 3730790581
- 6698761160 1480860535
- 9647622201 6211931236
drop table t1;
deallocate prepare stmt;
create database mysqltest1;
create table t1 (a int);
create table mysqltest1.t1 (a int);
select * from t1, mysqltest1.t1;
a a
prepare stmt from "select * from t1, mysqltest1.t1";
execute stmt;
a a
execute stmt;
a a
execute stmt;
a a
drop table t1;
drop table mysqltest1.t1;
drop database mysqltest1;
deallocate prepare stmt;
select '1.1' as a, '1.2' as a UNION SELECT '2.1', '2.2';
a a
1.1 1.2
2.1 2.2
prepare stmt from
"select '1.1' as a, '1.2' as a UNION SELECT '2.1', '2.2'";
execute stmt;
a a
1.1 1.2
2.1 2.2
execute stmt;
a a
1.1 1.2
2.1 2.2
execute stmt;
a a
1.1 1.2
2.1 2.2
deallocate prepare stmt;
create table t1 (a int);
insert into t1 values (1),(2),(3);
create table t2 select * from t1;
prepare stmt FROM 'create table t2 select * from t1';
drop table t2;
execute stmt;
drop table t2;
execute stmt;
execute stmt;
ERROR 42S01: Table 't2' already exists
drop table t2;
execute stmt;
drop table t1,t2;
deallocate prepare stmt;
create table t1 (a int);
insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
prepare stmt from "select sql_calc_found_rows * from t1 limit 2";
execute stmt;
a
1
2
select found_rows();
found_rows()
10
execute stmt;
a
1
2
select found_rows();
found_rows()
10
execute stmt;
a
1
2
select found_rows();
found_rows()
10
deallocate prepare stmt;
drop table t1;
CREATE TABLE t1 (N int, M tinyint);
INSERT INTO t1 VALUES (1,0),(1,0),(2,0),(2,0),(3,0);
PREPARE stmt FROM 'UPDATE t1 AS P1 INNER JOIN (SELECT N FROM t1 GROUP BY N HAVING COUNT(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2';
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
DROP TABLE t1;
prepare stmt from "select ? is null, ? is not null, ?";
select @no_such_var is null, @no_such_var is not null, @no_such_var;
@no_such_var is null @no_such_var is not null @no_such_var
1 0 NULL
execute stmt using @no_such_var, @no_such_var, @no_such_var;
? is null ? is not null ?
1 0 NULL
set @var='abc';
select @var is null, @var is not null, @var;
@var is null @var is not null @var
0 1 abc
execute stmt using @var, @var, @var;
? is null ? is not null ?
0 1 abc
set @var=null;
select @var is null, @var is not null, @var;
@var is null @var is not null @var
1 0 NULL
execute stmt using @var, @var, @var;
? is null ? is not null ?
1 0 NULL
create table t1 (pnum char(3));
create table t2 (pnum char(3));
prepare stmt from "select pnum from t2 having pnum in (select 'p1' from t1)";
execute stmt;
pnum
execute stmt;
pnum
execute stmt;
pnum
deallocate prepare stmt;
drop table t1, t2;
create table t1 (a varchar(20));
insert into t1 values ('foo');
prepare stmt FROM 'SELECT char_length (a) FROM t1';
ERROR 42000: FUNCTION test.char_length does not exist
drop table t1;
prepare stmt from "SELECT SQL_CALC_FOUND_ROWS 'foo' UNION SELECT 'bar' LIMIT 0";
execute stmt;
foo
SELECT FOUND_ROWS();
FOUND_ROWS()
2
execute stmt;
foo
SELECT FOUND_ROWS();
FOUND_ROWS()
2
deallocate prepare stmt;
create table t1 (a char(3) not null, b char(3) not null,
c char(3) not null, primary key (a, b, c));
create table t2 like t1;
prepare stmt from
"select t1.a from (t1 left outer join t2 on t2.a=1 and t1.b=t2.b)
where t1.a=1";
execute stmt;
a
execute stmt;
a
execute stmt;
a
prepare stmt from
"select t1.a, t1.b, t1.c, t2.a, t2.b, t2.c from
(t1 left outer join t2 on t2.a=? and t1.b=t2.b)
left outer join t2 t3 on t3.a=? where t1.a=?";
set @a:=1, @b:=1, @c:=1;
execute stmt using @a, @b, @c;
a b c a b c
execute stmt using @a, @b, @c;
a b c a b c
execute stmt using @a, @b, @c;
a b c a b c
deallocate prepare stmt;
drop table t1,t2;
SET @aux= "SELECT COUNT(*)
FROM INFORMATION_SCHEMA.COLUMNS A,
INFORMATION_SCHEMA.COLUMNS B
WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
AND A.TABLE_NAME = B.TABLE_NAME
AND A.COLUMN_NAME = B.COLUMN_NAME AND
A.TABLE_NAME = 'user'";
prepare my_stmt from @aux;
execute my_stmt;
COUNT(*)
37
execute my_stmt;
COUNT(*)
37
execute my_stmt;
COUNT(*)
37
deallocate prepare my_stmt;
drop procedure if exists p1|
drop table if exists t1|
create table t1 (id int)|
insert into t1 values(1)|
create procedure p1(a int, b int)
begin
declare c int;
select max(id)+1 into c from t1;
insert into t1 select a+b;
insert into t1 select a-b;
insert into t1 select a-c;
end|
set @a= 3, @b= 4|
prepare stmt from "call p1(?, ?)"|
execute stmt using @a, @b|
execute stmt using @a, @b|
select * from t1|
id
1
7
-1
1
7
-1
-5
deallocate prepare stmt|
drop procedure p1|
drop table t1|
drop table if exists t1;
Warnings:
Note 1051 Unknown table 't1'
create table t1 (c1 int(11) not null, c2 int(11) not null,
primary key (c1,c2), key c2 (c2), key c1 (c1));
insert into t1 values (200887, 860);
insert into t1 values (200887, 200887);
select * from t1 where (c1=200887 and c2=200887) or c2=860;
c1 c2
200887 860
200887 200887
prepare stmt from
"select * from t1 where (c1=200887 and c2=200887) or c2=860";
execute stmt;
c1 c2
200887 860
200887 200887
prepare stmt from
"select * from t1 where (c1=200887 and c2=?) or c2=?";
set @a=200887, @b=860;
execute stmt using @a, @b;
c1 c2
200887 860
200887 200887
deallocate prepare stmt;
drop table t1;
create table t1 (
id bigint(20) not null auto_increment,
code varchar(20) character set utf8 collate utf8_bin not null default '',
company_name varchar(250) character set utf8 collate utf8_bin default null,
setup_mode tinyint(4) default null,
start_date datetime default null,
primary key (id), unique key code (code)
);
create table t2 (
id bigint(20) not null auto_increment,
email varchar(250) character set utf8 collate utf8_bin default null,
name varchar(250) character set utf8 collate utf8_bin default null,
t1_id bigint(20) default null,
password varchar(250) character set utf8 collate utf8_bin default null,
primary_contact tinyint(4) not null default '0',
email_opt_in tinyint(4) not null default '1',
primary key (id), unique key email (email), key t1_id (t1_id),
constraint t2_fk1 foreign key (t1_id) references t1 (id)
);
insert into t1 values
(1, 'demo', 'demo s', 0, current_date()),
(2, 'code2', 'name 2', 0, current_date()),
(3, 'code3', 'name 3', 0, current_date());
insert into t2 values
(2, 'email1', 'name1', 3, 'password1', 0, 0),
(3, 'email2', 'name1', 1, 'password2', 1, 0),
(5, 'email3', 'name3', 2, 'password3', 0, 0);
prepare stmt from 'select t2.id from t2, t1 where (t1.id=? and t2.t1_id=t1.id)';
set @a=1;
execute stmt using @a;
id
3
select t2.id from t2, t1 where (t1.id=1 and t2.t1_id=t1.id);
id
3
deallocate prepare stmt;
drop table t1, t2;
create table t1 (a int);
insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
prepare stmt from "select * from t1 limit ?, ?";
set @offset=0, @limit=1;
execute stmt using @offset, @limit;
a
1
select * from t1 limit 0, 1;
a
1
set @offset=3, @limit=2;
execute stmt using @offset, @limit;
a
4
5
select * from t1 limit 3, 2;
a
4
5
prepare stmt from "select * from t1 limit ?";
execute stmt using @limit;
a
1
2
prepare stmt from "select * from t1 where a in (select a from t1 limit ?)";
ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
prepare stmt from "select * from t1 union all select * from t1 limit ?, ?";
set @offset=9;
set @limit=2;
execute stmt using @offset, @limit;
a
10
1
prepare stmt from "(select * from t1 limit ?, ?) union all
(select * from t1 limit ?, ?) order by a limit ?";
execute stmt using @offset, @limit, @offset, @limit, @limit;
a
10
10
drop table t1;
deallocate prepare stmt;
create table t1 (id int);
prepare stmt from "insert into t1 (id) select id from t1 union select id from t1";
execute stmt;
execute stmt;
deallocate prepare stmt;
drop table t1;
create table t1 (
id int(11) unsigned not null primary key auto_increment,
partner_id varchar(35) not null,
t1_status_id int(10) unsigned
);
insert into t1 values ("1", "partner1", "10"), ("2", "partner2", "10"),
("3", "partner3", "10"), ("4", "partner4", "10");
create table t2 (
id int(11) unsigned not null default '0',
t1_line_id int(11) unsigned not null default '0',
article_id varchar(20),
sequence int(11) not null default '0',
primary key (id,t1_line_id)
);
insert into t2 values ("1", "1", "sup", "0"), ("2", "1", "sup", "1"),
("2", "2", "sup", "2"), ("2", "3", "sup", "3"),
("2", "4", "imp", "4"), ("3", "1", "sup", "0"),
("4", "1", "sup", "0");
create table t3 (
id int(11) not null default '0',
preceeding_id int(11) not null default '0',
primary key (id,preceeding_id)
);
create table t4 (
user_id varchar(50) not null,
article_id varchar(20) not null,
primary key (user_id,article_id)
);
insert into t4 values("nicke", "imp");
prepare stmt from
'select distinct t1.partner_id
from t1 left join t3 on t1.id = t3.id
left join t1 pp on pp.id = t3.preceeding_id
where
exists (
select *
from t2 as pl_inner
where pl_inner.id = t1.id
and pl_inner.sequence <= (
select min(sequence) from t2 pl_seqnr
where pl_seqnr.id = t1.id
)
and exists (
select * from t4
where t4.article_id = pl_inner.article_id
and t4.user_id = ?
)
)
and t1.id = ?
group by t1.id
having count(pp.id) = 0';
set @user_id = 'nicke';
set @id = '2';
execute stmt using @user_id, @id;
partner_id
execute stmt using @user_id, @id;
partner_id
deallocate prepare stmt;
drop table t1, t2, t3, t4;
prepare stmt from 'select ?=?';
set @a='CHRISTINE ';
set @b='CHRISTINE';
execute stmt using @a, @b;
?=?
1
execute stmt using @a, @b;
?=?
1
set @a=1, @b=2;
execute stmt using @a, @b;
?=?
0
set @a='CHRISTINE ';
set @b='CHRISTINE';
execute stmt using @a, @b;
?=?
1
deallocate prepare stmt;
create table t1 (a int);
prepare stmt from "select ??";
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
prepare stmt from "select ?FROM t1";
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 '?FROM t1' at line 1
prepare stmt from "select FROM t1 WHERE?=1";
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 'FROM t1 WHERE?=1' at line 1
prepare stmt from "update t1 set a=a+?WHERE 1";
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 '?WHERE 1' at line 1
select ?;
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
select ??;
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
select ? from t1;
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 '? from t1' at line 1
drop table t1;
CREATE TABLE b12651_T1(a int) ENGINE=MYISAM;
CREATE TABLE b12651_T2(b int) ENGINE=MYISAM;
CREATE VIEW b12651_V1 as SELECT b FROM b12651_T2;
PREPARE b12651 FROM 'SELECT 1 FROM b12651_T1 WHERE a IN (SELECT b FROM b12651_V1)';
EXECUTE b12651;
1
DROP VIEW b12651_V1;
DROP TABLE b12651_T1, b12651_T2;
DEALLOCATE PREPARE b12651;
prepare stmt from "select @@time_zone";
execute stmt;
@@time_zone
SYSTEM
set @@time_zone:='Japan';
execute stmt;
@@time_zone
Japan
prepare stmt from "select @@tx_isolation";
execute stmt;
@@tx_isolation
REPEATABLE-READ
set transaction isolation level read committed;
execute stmt;
@@tx_isolation
READ-COMMITTED
set transaction isolation level serializable;
execute stmt;
@@tx_isolation
SERIALIZABLE
set @@tx_isolation=default;
execute stmt;
@@tx_isolation
REPEATABLE-READ
deallocate prepare stmt;
prepare stmt from "create temporary table t1 (letter enum('','a','b','c')
not null)";
execute stmt;
drop table t1;
execute stmt;
drop table t1;
execute stmt;
drop table t1;
set names latin1;
prepare stmt from "create table t1 (a enum('test') default 'test')
character set utf8";
execute stmt;
drop table t1;
execute stmt;
drop table t1;
execute stmt;
drop table t1;
set names default;
deallocate prepare stmt;
create table t1 (
word_id mediumint(8) unsigned not null default '0',
formatted varchar(20) not null default ''
);
insert into t1 values
(80,'pendant'), (475,'pretendants'), (989,'tendances'),
(1019,'cependant'),(1022,'abondance'),(1205,'independants'),
(13,'lessiver'),(25,'lambiner'),(46,'situer'),(71,'terminer'),
(82,'decrocher');
select count(*) from t1 where formatted like '%NDAN%';
count(*)
6
select count(*) from t1 where formatted like '%ER';
count(*)
5
prepare stmt from "select count(*) from t1 where formatted like ?";
set @like="%NDAN%";
execute stmt using @like;
count(*)
6
set @like="%ER";
execute stmt using @like;
count(*)
5
set @like="%NDAN%";
execute stmt using @like;
count(*)
6
set @like="%ER";
execute stmt using @like;
count(*)
5
deallocate prepare stmt;
drop table t1;
prepare stmt from 'create table t1 (a varchar(10) character set utf8)';
execute stmt;
insert into t1 (a) values (repeat('a', 20));
select length(a) from t1;
length(a)
10
drop table t1;
execute stmt;
insert into t1 (a) values (repeat('a', 20));
select length(a) from t1;
length(a)
10
drop table t1;
deallocate prepare stmt;
create table t1 (col1 integer, col2 integer);
insert into t1 values(100,100),(101,101),(102,102),(103,103);
prepare stmt from 'select col1, col2 from t1 where (col1, col2) in ((?,?))';
set @a=100, @b=100;
execute stmt using @a,@b;
col1 col2
100 100
set @a=101, @b=101;
execute stmt using @a,@b;
col1 col2
101 101
set @a=102, @b=102;
execute stmt using @a,@b;
col1 col2
102 102
set @a=102, @b=103;
execute stmt using @a,@b;
col1 col2
deallocate prepare stmt;
drop table t1;
set @old_max_prepared_stmt_count= @@max_prepared_stmt_count;
show variables like 'max_prepared_stmt_count';
Variable_name Value
max_prepared_stmt_count 16382
show variables like 'prepared_stmt_count';
Variable_name Value
prepared_stmt_count 0
select @@max_prepared_stmt_count, @@prepared_stmt_count;
@@max_prepared_stmt_count @@prepared_stmt_count
16382 0
set global max_prepared_stmt_count=-1;
select @@max_prepared_stmt_count;
@@max_prepared_stmt_count
0
set global max_prepared_stmt_count=10000000000000000;
select @@max_prepared_stmt_count;
@@max_prepared_stmt_count
1048576
set global max_prepared_stmt_count=default;
select @@max_prepared_stmt_count;
@@max_prepared_stmt_count
16382
set @@max_prepared_stmt_count=1;
ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL
set max_prepared_stmt_count=1;
ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL
set local max_prepared_stmt_count=1;
ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL
set local prepared_stmt_count=0;
ERROR HY000: Variable 'prepared_stmt_count' is a read only variable
set @@prepared_stmt_count=0;
ERROR HY000: Variable 'prepared_stmt_count' is a read only variable
set global prepared_stmt_count=1;
ERROR HY000: Variable 'prepared_stmt_count' is a read only variable
set global max_prepared_stmt_count=1;
select @@max_prepared_stmt_count;
@@max_prepared_stmt_count
1
set global max_prepared_stmt_count=0;
select @@max_prepared_stmt_count, @@prepared_stmt_count;
@@max_prepared_stmt_count @@prepared_stmt_count
0 0
prepare stmt from "select 1";
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0)
select @@prepared_stmt_count;
@@prepared_stmt_count
0
set global max_prepared_stmt_count=1;
prepare stmt from "select 1";
select @@prepared_stmt_count;
@@prepared_stmt_count
1
prepare stmt1 from "select 1";
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 1)
select @@prepared_stmt_count;
@@prepared_stmt_count
1
deallocate prepare stmt;
select @@prepared_stmt_count;
@@prepared_stmt_count
0
prepare stmt from "select 1";
select @@prepared_stmt_count;
@@prepared_stmt_count
1
prepare stmt from "select 2";
select @@prepared_stmt_count;
@@prepared_stmt_count
1
select @@prepared_stmt_count, @@max_prepared_stmt_count;
@@prepared_stmt_count @@max_prepared_stmt_count
1 1
set global max_prepared_stmt_count=0;
prepare stmt from "select 1";
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0)
execute stmt;
ERROR HY000: Unknown prepared statement handler (stmt) given to EXECUTE
select @@prepared_stmt_count;
@@prepared_stmt_count
0
prepare stmt from "select 1";
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0)
select @@prepared_stmt_count;
@@prepared_stmt_count
0
set global max_prepared_stmt_count=3;
select @@max_prepared_stmt_count, @@prepared_stmt_count;
@@max_prepared_stmt_count @@prepared_stmt_count
3 0
prepare stmt from "select 1";
prepare stmt from "select 2";
prepare stmt1 from "select 3";
prepare stmt2 from "select 4";
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 3)
prepare stmt2 from "select 4";
ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 3)
select @@max_prepared_stmt_count, @@prepared_stmt_count;
@@max_prepared_stmt_count @@prepared_stmt_count
3 3
deallocate prepare stmt;
select @@max_prepared_stmt_count, @@prepared_stmt_count;
@@max_prepared_stmt_count @@prepared_stmt_count
3 0
set global max_prepared_stmt_count= @old_max_prepared_stmt_count;
create table t1 (id int);
prepare ins_call from "insert into t1 (id) values (1)";
execute ins_call;
select row_count();
row_count()
1
drop table t1;
create table t1 (a int, b int);
insert into t1 (a,b) values (2,8),(1,9),(3,7);
prepare stmt from "select * from t1 order by ?";
set @a=NULL;
execute stmt using @a;
a b
2 8
1 9
3 7
set @a=1;
execute stmt using @a;
a b
1 9
2 8
3 7
set @a=2;
execute stmt using @a;
a b
3 7
2 8
1 9
deallocate prepare stmt;
select * from t1 order by 1;
a b
1 9
2 8
3 7
prepare stmt from "select * from t1 order by ?+1";
set @a=0;
execute stmt using @a;
a b
2 8
1 9
3 7
set @a=1;
execute stmt using @a;
a b
2 8
1 9
3 7
deallocate prepare stmt;
select * from t1 order by 1+1;
a b
2 8
1 9
3 7
drop table t1;
create table t1 (a int);
create table t2 like t1;
create table t3 like t2;
prepare stmt from "repair table t1";
execute stmt;
Table Op Msg_type Msg_text
test.t1 repair status OK
execute stmt;
Table Op Msg_type Msg_text
test.t1 repair status OK
prepare stmt from "optimize table t1";
execute stmt;
Table Op Msg_type Msg_text
test.t1 optimize status OK
execute stmt;
Table Op Msg_type Msg_text
test.t1 optimize status Table is already up to date
prepare stmt from "analyze table t1";
execute stmt;
Table Op Msg_type Msg_text
test.t1 analyze status Table is already up to date
execute stmt;
Table Op Msg_type Msg_text
test.t1 analyze status Table is already up to date
prepare stmt from "repair table t1, t2, t3";
execute stmt;
Table Op Msg_type Msg_text
test.t1 repair status OK
test.t2 repair status OK
test.t3 repair status OK
execute stmt;
Table Op Msg_type Msg_text
test.t1 repair status OK
test.t2 repair status OK
test.t3 repair status OK
prepare stmt from "optimize table t1, t2, t3";
execute stmt;
Table Op Msg_type Msg_text
test.t1 optimize status OK
test.t2 optimize status OK
test.t3 optimize status OK
execute stmt;
Table Op Msg_type Msg_text
test.t1 optimize status Table is already up to date
test.t2 optimize status Table is already up to date
test.t3 optimize status Table is already up to date
prepare stmt from "analyze table t1, t2, t3";
execute stmt;
Table Op Msg_type Msg_text
test.t1 analyze status Table is already up to date
test.t2 analyze status Table is already up to date
test.t3 analyze status Table is already up to date
execute stmt;
Table Op Msg_type Msg_text
test.t1 analyze status Table is already up to date
test.t2 analyze status Table is already up to date
test.t3 analyze status Table is already up to date
prepare stmt from "repair table t1, t4, t3";
execute stmt;
Table Op Msg_type Msg_text
test.t1 repair status OK
test.t4 repair error Table 'test.t4' doesn't exist
test.t3 repair status OK
Warnings:
Error 1146 Table 'test.t4' doesn't exist
execute stmt;
Table Op Msg_type Msg_text
test.t1 repair status OK
test.t4 repair error Table 'test.t4' doesn't exist
test.t3 repair status OK
Warnings:
Error 1146 Table 'test.t4' doesn't exist
prepare stmt from "optimize table t1, t3, t4";
execute stmt;
Table Op Msg_type Msg_text
test.t1 optimize status OK
test.t3 optimize status OK
test.t4 optimize error Table 'test.t4' doesn't exist
Warnings:
Error 1146 Table 'test.t4' doesn't exist
execute stmt;
Table Op Msg_type Msg_text
test.t1 optimize status Table is already up to date
test.t3 optimize status Table is already up to date
test.t4 optimize error Table 'test.t4' doesn't exist
Warnings:
Error 1146 Table 'test.t4' doesn't exist
prepare stmt from "analyze table t4, t1";
execute stmt;
Table Op Msg_type Msg_text
test.t4 analyze error Table 'test.t4' doesn't exist
test.t1 analyze status Table is already up to date
Warnings:
Error 1146 Table 'test.t4' doesn't exist
execute stmt;
Table Op Msg_type Msg_text
test.t4 analyze error Table 'test.t4' doesn't exist
test.t1 analyze status Table is already up to date
Warnings:
Error 1146 Table 'test.t4' doesn't exist
deallocate prepare stmt;
drop table t1, t2, t3;
create database mysqltest_long_database_name_to_thrash_heap;
use test;
create table t1 (i int);
prepare stmt from "alter table test.t1 rename t1";
use mysqltest_long_database_name_to_thrash_heap;
execute stmt;
show tables like 't1';
Tables_in_mysqltest_long_database_name_to_thrash_heap (t1)
prepare stmt from "alter table test.t1 rename t1";
use test;
execute stmt;
show tables like 't1';
Tables_in_test (t1)
use mysqltest_long_database_name_to_thrash_heap;
show tables like 't1';
Tables_in_mysqltest_long_database_name_to_thrash_heap (t1)
t1
deallocate prepare stmt;
use mysqltest_long_database_name_to_thrash_heap;
prepare stmt_create from "create table t1 (i int)";
prepare stmt_insert from "insert into t1 (i) values (1)";
prepare stmt_update from "update t1 set i=2";
prepare stmt_delete from "delete from t1 where i=2";
prepare stmt_select from "select * from t1";
prepare stmt_alter from "alter table t1 add column (b int)";
prepare stmt_alter1 from "alter table t1 drop column b";
prepare stmt_analyze from "analyze table t1";
prepare stmt_optimize from "optimize table t1";
prepare stmt_show from "show tables like 't1'";
prepare stmt_truncate from "truncate table t1";
prepare stmt_drop from "drop table t1";
drop table t1;
use test;
execute stmt_create;
show tables like 't1';
Tables_in_test (t1)
use mysqltest_long_database_name_to_thrash_heap;
show tables like 't1';
Tables_in_mysqltest_long_database_name_to_thrash_heap (t1)
t1
use test;
execute stmt_insert;
select * from mysqltest_long_database_name_to_thrash_heap.t1;
i
1
execute stmt_update;
select * from mysqltest_long_database_name_to_thrash_heap.t1;
i
2
execute stmt_delete;
execute stmt_select;
i
execute stmt_alter;
show columns from mysqltest_long_database_name_to_thrash_heap.t1;
Field Type Null Key Default Extra
i int(11) YES NULL
b int(11) YES NULL
execute stmt_alter1;
show columns from mysqltest_long_database_name_to_thrash_heap.t1;
Field Type Null Key Default Extra
i int(11) YES NULL
execute stmt_analyze;
Table Op Msg_type Msg_text
mysqltest_long_database_name_to_thrash_heap.t1 analyze status Table is already up to date
execute stmt_optimize;
Table Op Msg_type Msg_text
mysqltest_long_database_name_to_thrash_heap.t1 optimize status Table is already up to date
execute stmt_show;
Tables_in_mysqltest_long_database_name_to_thrash_heap (t1)
t1
execute stmt_truncate;
execute stmt_drop;
show tables like 't1';
Tables_in_test (t1)
use mysqltest_long_database_name_to_thrash_heap;
show tables like 't1';
Tables_in_mysqltest_long_database_name_to_thrash_heap (t1)
drop database mysqltest_long_database_name_to_thrash_heap;
prepare stmt_create from "create table t1 (i int)";
ERROR 3D000: No database selected
prepare stmt_insert from "insert into t1 (i) values (1)";
ERROR 3D000: No database selected
prepare stmt_update from "update t1 set i=2";
ERROR 3D000: No database selected
prepare stmt_delete from "delete from t1 where i=2";
ERROR 3D000: No database selected
prepare stmt_select from "select * from t1";
ERROR 3D000: No database selected
prepare stmt_alter from "alter table t1 add column (b int)";
ERROR 3D000: No database selected
prepare stmt_alter1 from "alter table t1 drop column b";
ERROR 3D000: No database selected
prepare stmt_analyze from "analyze table t1";
ERROR 3D000: No database selected
prepare stmt_optimize from "optimize table t1";
ERROR 3D000: No database selected
prepare stmt_show from "show tables like 't1'";
ERROR 3D000: No database selected
prepare stmt_truncate from "truncate table t1";
ERROR 3D000: No database selected
prepare stmt_drop from "drop table t1";
ERROR 3D000: No database selected
create temporary table t1 (i int);
ERROR 3D000: No database selected
use test;
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