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
# End of MDEV-10709 Expressions as parameters to Dynamic SQL
#
#
# MDEV-10585 EXECUTE IMMEDIATE statement
#
EXECUTE IMMEDIATE 'SELECT 1 AS a';
a
1
SET @a=10;
EXECUTE IMMEDIATE 'SELECT ? AS a' USING @a;
a
10
EXECUTE IMMEDIATE 'SELECT ? AS a' USING 20;
a
20
#
# Erroneous queries
#
EXECUTE IMMEDIATE 'xxx';
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 'xxx' at line 1
EXECUTE IMMEDIATE 'SELECT 1' USING @a;
ERROR HY000: Incorrect arguments to EXECUTE
EXECUTE IMMEDIATE 'SELECT ?';
ERROR HY000: Incorrect arguments to EXECUTE
EXECUTE IMMEDIATE 'EXECUTE IMMEDIATE "SELECT 1"';
ERROR HY000: This command is not supported in the prepared statement protocol yet
EXECUTE IMMEDIATE 'PREPARE stmt FROM "SELECT 1"';
ERROR HY000: This command is not supported in the prepared statement protocol yet
EXECUTE IMMEDIATE 'EXECUTE stmt';
ERROR HY000: This command is not supported in the prepared statement protocol yet
EXECUTE IMMEDIATE 'DEALLOCATE PREPARE stmt';
ERROR HY000: This command is not supported in the prepared statement protocol yet
EXECUTE IMMEDIATE 'SELECT ?' USING _latin1'a'=_latin2'a';
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation '='
EXECUTE IMMEDIATE 'SELECT ?' USING ROW(1,2);
ERROR 21000: Operand should contain 1 column(s)
#
# Testing disallowed expressions in USING
#
EXECUTE IMMEDIATE 'SELECT ? FROM DUAL' USING (SELECT 1);
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 'SELECT 1)' at line 1
CREATE FUNCTION f1() RETURNS VARCHAR(10) RETURN 'test';
EXECUTE IMMEDIATE 'SELECT ? FROM DUAL' USING f1();
ERROR 42000: EXECUTE..USING does not support subqueries or stored functions
DROP FUNCTION f1;
#
# DDL
#
EXECUTE IMMEDIATE 'CREATE TABLE t1 (a INT)';
EXECUTE IMMEDIATE 'SHOW CREATE TABLE t1';
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
EXECUTE IMMEDIATE 'DROP TABLE t1';
SET @stmt= 'CREATE TABLE t1 (a INT)';
EXECUTE IMMEDIATE @stmt;
SET @stmt= 'SHOW CREATE TABLE t1';
EXECUTE IMMEDIATE @stmt;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SET @stmt= 'DROP TABLE t1';
EXECUTE IMMEDIATE @stmt;
#
# DDL with parameters
#
SET @a= 10, @b= 10.1, @c= 10e0, @d='str';
EXECUTE IMMEDIATE
'CREATE TABLE t1 AS SELECT ? AS a,? AS b,? AS c,? AS d'
USING @a,@b,@c,@d;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` bigint(21) NOT NULL,
`b` decimal(3,1) DEFAULT NULL,
`c` double NOT NULL,
`d` varchar(3) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
EXECUTE IMMEDIATE
'CREATE TABLE t1 AS SELECT ? AS a,? AS b,? AS c,? AS d'
USING 10, 10.1, 10e0, 'str';
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` bigint(21) NOT NULL,
`b` decimal(3,1) DEFAULT NULL,
`c` double NOT NULL,
`d` varchar(3) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
EXECUTE IMMEDIATE
'CREATE TABLE t1 AS SELECT ? AS t1,? AS t2, ? AS d1,? AS dt1, ? AS dt2'
USING TIME'10:20:30',
TIME'10:20:30.123',
DATE'2001-01-01',
TIMESTAMP'2001-01-01 10:20:30',
TIMESTAMP'2001-01-01 10:20:30.123';
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`t1` time DEFAULT NULL,
`t2` time(3) DEFAULT NULL,
`d1` date DEFAULT NULL,
`dt1` datetime DEFAULT NULL,
`dt2` datetime(3) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
#
# Using a user variable as an EXECUTE IMMEDIATE..USING out parameter
#
CREATE PROCEDURE p1(OUT a INT)
BEGIN
SET a:= 10;
END;
/
SET @a=1;
CALL p1(@a);
SELECT @a;
@a
10
SET @a=2;
EXECUTE IMMEDIATE 'CALL p1(?)' USING @a;
SELECT @a;
@a
10
DROP PROCEDURE p1;
#
# Using an SP variable as an EXECUTE IMMEDIATE..USING out parameter
#
CREATE PROCEDURE p1 (OUT a INT)
BEGIN
SET a=10;
END;
/
CREATE PROCEDURE p2 (OUT a INT)
BEGIN
EXECUTE IMMEDIATE 'CALL p1(?)' USING a;
END;
/
SET @a= 1;
CALL p2(@a);
SELECT @a;
@a
10
DROP PROCEDURE p2;
DROP PROCEDURE p1;
#
# Changing user variables
#
SET @a=10;
EXECUTE IMMEDIATE 'SET @a=@a+1';
SELECT @a;
@a
11
#
# SET STATEMENT
#
SET @@max_sort_length=1024;
EXECUTE IMMEDIATE 'SET STATEMENT max_sort_length=1025 FOR SELECT @@max_sort_length';
@@max_sort_length
1025
SELECT @@max_sort_length;
@@max_sort_length
1024
SET @@max_sort_length=DEFAULT;
#
# Similar to prepared EXECUTE, IMMEDIATE is not allowed in stored functions
#
CREATE FUNCTION f1() RETURNS INT
BEGIN
EXECUTE IMMEDIATE 'DO 1';
RETURN 1;
END;
$$
ERROR 0A000: Dynamic SQL is not allowed in stored function or trigger
#
# Status variables
#
CREATE FUNCTION get_status_var(name TEXT) RETURNS INT
RETURN (SELECT CAST(VARIABLE_VALUE AS INT)
FROM INFORMATION_SCHEMA.SESSION_STATUS
WHERE VARIABLE_NAME=name);
CREATE PROCEDURE test_status_var(name TEXT)
BEGIN
SET @cnt0=get_status_var(name);
EXECUTE IMMEDIATE 'DO 1';
SET @cnt1=get_status_var(name);
SELECT @cnt1-@cnt0 AS increment;
END;
$$
# Note, EXECUTE IMMEDIATE does not increment COM_EXECUTE_SQL
