【MySql 存储过程】一键删(li)库(zhi)

DROP PROCEDURE IF EXISTS dbClear;
DELIMITER $$
CREATE PROCEDURE dbClear()
BEGIN

	DECLARE indexOfDb INT DEFAULT 0;
	SET @dbCount = 0;
	SELECT count(*) FROM information_schema.schemata WHERE schema_name LIKE 'lxmajs_%' INTO @dbCount;
	
	WHILE indexOfDb < @dbCount DO
 	  SET @runSql = '';
	  SELECT concat('drop database ',schema_name) FROM information_schema.schemata WHERE schema_name LIKE 'lxmajs_%' LIMIT 1 INTO @runSql;

  	  PREPARE stmt FROM @runSql;
  	  EXECUTE stmt;
      DEALLOCATE PREPARE stmt;
      SET indexOfDb = indexOfDb + 1;
    END WHILE;
END
$$
CALL dbClear();

　使用存储过程，删除 lxmajs_ 开头的数据库。