MySQL游标循环示例_MySQL

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MySQL游标循环示例

 

如果用in语句，感觉很慢，跑了好久都没有结果，用存储过程删除可以把握

进度，这个是MySQL游标循环的示例代码，避免以后经常找，记录上来。

   

CREATE DEFINER=`root`@`%` PROCEDURE `bi`.`clean_data`()

    READS SQL DATA

BEGIN

  declare v_imei varchar(128);

    declare stop int default 0;

    declare cur cursor for (select imei from bi.tmp_imei);

    declare CONTINUE HANDLER FOR SQLSTATE '02000' SET stop=1;

    OPEN cur;

    FETCH cur INTO v_imei;

    WHILE stop 1 DO

        delete from bi.tmp_dt_fee_user_info where imei=v_imei;

        FETCH cur INTO v_imei;

    END WHILE;

    CLOSE cur;

END

 

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