mirror of
				https://github.com/MariaDB/server.git
				synced 2025-11-03 20:36:16 +01:00 
			
		
		
		
	for general use. mysql-test/Makefile.am: Adding directories of additional test suites mysql-test/mysql-stress-test.pl: Adding check for additional errors checking during test run
		
			
				
	
	
		
			412 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			Text
		
	
	
	
	
	
			
		
		
	
	
			412 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			Text
		
	
	
	
	
	
--disable_warnings
 | 
						|
DROP TABLE IF EXISTS t6;
 | 
						|
--enable_warnings
 | 
						|
CREATE TABLE t6(c1 TINYINT UNSIGNED NULL);
 | 
						|
PREPARE stmt6 FROM 'INSERT INTO t6 (c1) VALUES(?)';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
--sorted_result
 | 
						|
PREPARE stmt6 FROM 'SELECT * FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'UPDATE t6 SET c1 = ? WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
SET @b=0;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=0;
 | 
						|
SET @b=NULL;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=255;
 | 
						|
SET @a=201;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'DELETE FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
DROP TABLE t6;
 | 
						|
CREATE TABLE t6(c1 SMALLINT UNSIGNED NULL);
 | 
						|
PREPARE stmt6 FROM 'INSERT INTO t6 (c1) VALUES(?)';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
--sorted_result
 | 
						|
PREPARE stmt6 FROM 'SELECT * FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'UPDATE t6 SET c1 = ? WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
SET @b=0;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=0;
 | 
						|
SET @b=NULL;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=255;
 | 
						|
SET @a=201;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'DELETE FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
DROP TABLE t6;
 | 
						|
CREATE TABLE t6(c1 MEDIUMINT UNSIGNED NULL);
 | 
						|
PREPARE stmt6 FROM 'INSERT INTO t6 (c1) VALUES(?)';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
--sorted_result
 | 
						|
PREPARE stmt6 FROM 'SELECT * FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'UPDATE t6 SET c1 = ? WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
SET @b=0;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=0;
 | 
						|
SET @b=NULL;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=255;
 | 
						|
SET @a=201;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'DELETE FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
DROP TABLE t6;
 | 
						|
CREATE TABLE t6(c1 INT UNSIGNED NULL);
 | 
						|
PREPARE stmt6 FROM 'INSERT INTO t6 (c1) VALUES(?)';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
--sorted_result
 | 
						|
PREPARE stmt6 FROM 'SELECT * FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'UPDATE t6 SET c1 = ? WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
SET @b=0;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=0;
 | 
						|
SET @b=NULL;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=255;
 | 
						|
SET @a=201;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'DELETE FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
DROP TABLE t6;
 | 
						|
CREATE TABLE t6(c1 INTEGER UNSIGNED NULL);
 | 
						|
PREPARE stmt6 FROM 'INSERT INTO t6 (c1) VALUES(?)';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
--sorted_result
 | 
						|
PREPARE stmt6 FROM 'SELECT * FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'UPDATE t6 SET c1 = ? WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
SET @b=0;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=0;
 | 
						|
SET @b=NULL;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=255;
 | 
						|
SET @a=201;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'DELETE FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
DROP TABLE t6;
 | 
						|
CREATE TABLE t6(c1 BIGINT UNSIGNED NULL);
 | 
						|
PREPARE stmt6 FROM 'INSERT INTO t6 (c1) VALUES(?)';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
--sorted_result
 | 
						|
PREPARE stmt6 FROM 'SELECT * FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'UPDATE t6 SET c1 = ? WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
SET @b=0;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=0;
 | 
						|
SET @b=NULL;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
SET @a=255;
 | 
						|
SET @a=201;
 | 
						|
EXECUTE stmt6 USING @a,@b;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
PREPARE stmt6 FROM 'DELETE FROM t6 WHERE c1 = ?';
 | 
						|
SET @a=NULL;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=0;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
SET @a=255;
 | 
						|
EXECUTE stmt6 USING @a;
 | 
						|
--sorted_result
 | 
						|
SELECT * FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS total_rows FROM t6;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS positive_rows FROM t6 WHERE c1 > 0;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS null_rows FROM t6 WHERE c1 IS NULL;
 | 
						|
--sorted_result
 | 
						|
SELECT COUNT(c1) AS not_null_rows FROM t6 WHERE c1 IS NOT NULL;
 | 
						|
DEALLOCATE PREPARE stmt6;
 | 
						|
DROP TABLE t6;
 | 
						|
 |