--disable_warnings DROP TABLE IF EXISTS t1; --enable_warnings CREATE TABLE t1(c1 CHAR(100) NOT NULL); PREPARE stmt1 FROM 'INSERT INTO t1 (c1) VALUES(?)'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; SET @a='123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE c1 = ?'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; PREPARE stmt1 FROM 'UPDATE t1 SET c1 = ? WHERE c1 = ?'; SET @a=''; SET @b='b'; EXECUTE stmt1 USING @a,@b; SET @a='x'; SET @b='c'; EXECUTE stmt1 USING @a,@c; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'DELETE FROM t1 WHERE c1 = ?'; SET @a='a'; EXECUTE stmt1 USING @a; SET @a='b'; EXECUTE stmt1 USING @a; SET @a='c'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; DROP TABLE t1; CREATE TABLE t1(c1 VARCHAR(100) NOT NULL); PREPARE stmt1 FROM 'INSERT INTO t1 (c1) VALUES(?)'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; SET @a='123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE c1 = ?'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; PREPARE stmt1 FROM 'UPDATE t1 SET c1 = ? WHERE c1 = ?'; SET @a=''; SET @b='b'; EXECUTE stmt1 USING @a,@b; SET @a='x'; SET @b='c'; EXECUTE stmt1 USING @a,@c; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'DELETE FROM t1 WHERE c1 = ?'; SET @a='a'; EXECUTE stmt1 USING @a; SET @a='b'; EXECUTE stmt1 USING @a; SET @a='c'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; DROP TABLE t1; CREATE TABLE t1(c1 BINARY(100) NOT NULL); PREPARE stmt1 FROM 'INSERT INTO t1 (c1) VALUES(?)'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; SET @a='123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE c1 = ?'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; PREPARE stmt1 FROM 'UPDATE t1 SET c1 = ? WHERE c1 = ?'; SET @a=''; SET @b='b'; EXECUTE stmt1 USING @a,@b; SET @a='x'; SET @b='c'; EXECUTE stmt1 USING @a,@c; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'DELETE FROM t1 WHERE c1 = ?'; SET @a='a'; EXECUTE stmt1 USING @a; SET @a='b'; EXECUTE stmt1 USING @a; SET @a='c'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; DROP TABLE t1; CREATE TABLE t1(c1 VARBINARY(100) NOT NULL); PREPARE stmt1 FROM 'INSERT INTO t1 (c1) VALUES(?)'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; SET @a='123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE c1 = ?'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; PREPARE stmt1 FROM 'UPDATE t1 SET c1 = ? WHERE c1 = ?'; SET @a=''; SET @b='b'; EXECUTE stmt1 USING @a,@b; SET @a='x'; SET @b='c'; EXECUTE stmt1 USING @a,@c; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'DELETE FROM t1 WHERE c1 = ?'; SET @a='a'; EXECUTE stmt1 USING @a; SET @a='b'; EXECUTE stmt1 USING @a; SET @a='c'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; DROP TABLE t1; CREATE TABLE t1(c1 BLOB(100) NOT NULL); PREPARE stmt1 FROM 'INSERT INTO t1 (c1) VALUES(?)'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; SET @a='123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE c1 = ?'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; PREPARE stmt1 FROM 'UPDATE t1 SET c1 = ? WHERE c1 = ?'; SET @a=''; SET @b='b'; EXECUTE stmt1 USING @a,@b; SET @a='x'; SET @b='c'; EXECUTE stmt1 USING @a,@c; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'DELETE FROM t1 WHERE c1 = ?'; SET @a='a'; EXECUTE stmt1 USING @a; SET @a='b'; EXECUTE stmt1 USING @a; SET @a='c'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; DROP TABLE t1; CREATE TABLE t1(c1 TEXT(100) NOT NULL); PREPARE stmt1 FROM 'INSERT INTO t1 (c1) VALUES(?)'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; SET @a='123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE c1 = ?'; SET @a=''; EXECUTE stmt1 USING @a; SET @a='x'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; PREPARE stmt1 FROM 'UPDATE t1 SET c1 = ? WHERE c1 = ?'; SET @a=''; SET @b='b'; EXECUTE stmt1 USING @a,@b; SET @a='x'; SET @b='c'; EXECUTE stmt1 USING @a,@c; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; PREPARE stmt1 FROM 'DELETE FROM t1 WHERE c1 = ?'; SET @a='a'; EXECUTE stmt1 USING @a; SET @a='b'; EXECUTE stmt1 USING @a; SET @a='c'; EXECUTE stmt1 USING @a; DEALLOCATE PREPARE stmt1; SELECT * FROM t1; SELECT COUNT(c1) AS total_rows FROM t1; SELECT COUNT(c1) AS null_rows FROM t1 WHERE c1 IS NULL; SELECT COUNT(c1) AS not_null_rows FROM t1 WHERE c1 IS NOT NULL; DROP TABLE t1;