mysql中循环截取用户信息并插入到目标表对应的字段中
操作环境:有表game_list,字段:uid,score1,score2,seat_id,last_update; 传入参数为i_player_detail ,传入的值为多个用户的id、之前分数、之后分数、座位号,每个用户的数据用分号(;)隔开; 操作目的:将各个用户对应的属性插入到目标表对应的字
操作环境:有表game_list,字段:uid,score1,score2,seat_id,last_update;
传入参数为i_player_detail ,传入的值为多个用户的id、之前分数、之后分数、座位号,每个用户的数据用分号(;)隔开;
操作目的:将各个用户对应的属性插入到目标表对应的字段中,last_update为数据更新日期;
传入参数i_player_detail ,里面存放多个用户的信息,每个用户的一组数据用分号隔开,每个用户的信息多个,比如
“用户id,score,desk,seat;
用户id,score,desk,seat;……”
-- 使用存储过程 delimiter $$ use `log_pdk`$$ drop procedure if exists `game_c`$$ create procedure `game_c` (in i_player_detail varchar(500)) SQL SECURITY INVOKER BEGIN DROP TABLE IF EXISTS `temp_list`; --创建临时表,将截取的数据先插入到临时表 CREATE TEMPORARY TABLE `temp_list`( `uid` INT(10) UNSIGNED NOT NULL, `score1` INT(10) UNSIGNED NOT NULL, `score2` INT(10) UNSIGNED NOT NULL, `seat_id` TINYINT(3) UNSIGNED NOT NULL ); -- declare str varchar(500);-- 用来拼接sql动态语句 declare m_detail varchar(500); declare m_num tinyint; -- 当传入的用户信息字符串中含有分号';',进行截取 set m_num = position(';' in str) -- 不存在分号的时候,返回0 while m_num >= 1 do begin set @str = 'insert into temp_list values (' + substring(m_detail,1,m_num-1)+')' -- 截取第一个用户的信息(第一个分号前面的字符),插入到临时表 prepare statement1 from @str; execute statement1; deallocate prepare statement1; set m_detail = substring(m_detail,m_num+1); -- 定义除去第一个用户和分号那部分的字符串 set set m_num = position(';' in str); end while; -- 从临时表抽出所有字段,添加时间字段,插入到表game_list INSERT INTO `game_list`(`uid`,`score1`,`score2`,`seat_id`, `last_update`) SELECT `uid`, `score1`, `score2`, `seat_id`, current_date() FROM `temp_list`; end$$ delimiter ;

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