说明：此处为《高性能mysql（第二版)》中的示例代码，除了数据库名 其他未经更改。仅供学习及参考
对数据库的每个表执行优化的存储过程
CREATE PROCEDURE `inventory`.`optimize_table` (db_name VARCHAR(64))
BEGIN
DECLARE t VARCHAR(64);
DECLARE done INT DEFAULT 0;
DECLARE c CURSOR FOR
SELECT table_name FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA=db_name AND TABLE_TYPE=’BASE TABLE’;
DECLARE CONTINUE HANDLER FOR SQLSTATE ‘02000’ SET done=1;
OPEN c;
tables_loop:LOOP
FETCH c INTO t;
IF done THEN
CLOSE c;
LEAVE tables_loop;
END IF;
SET @stmt_text:=CONCAT(“OPTIMIZE TABLE “,db_name,’.’,t);
PREPARE stmt FROM @stmt_text;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END LOOP;
CLOSE c;
END
语句2：
CREATE PROCEDURE `inventory`.`optimize_tables2` (db_name VARCHAR(64))
BEGIN
DECLARE t VARCHAR(64);
DECLARE done INT DEFAULT 0;
DECLARE c CURSOR FOR
SELECT table_name FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA=db_name AND TABLE_TYPE=’BASE TABLE’;
DECLARE CONTINUE HANDLER FOR SQLSTATE ‘02000’ SET done=1;
OPEN c;
REPEAT
FETCH c INTO t;
IF NOT done THEN
SET @stmt_text:=CONCAT(“OPTIMIZE TABLE “,db_name,’.’,t);
PREPARE stmt FROM @stmt_text;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END IF;
UNTIL done END REPEAT;
CLOSE c;
END
调用时为call optimize_tables2(‘库名’);
或者
call optimize_tables(‘库名’);
