mysql存储过程循环执行查询 sqlserver存储过程中循环遍历结果集?
sqlserver存储过程中循环遍历结果集?
sql1=select * from (select *, row_number() over(order by username ) as rowNumber from users where regfrom="&admin&") as t where t.rowNumber > 0 and t.rowNumber <= 0 30 order by username怎么会有27 条记录呢,除非你的表 一共就27条记录吧。用游标或临时表--游标declare youbiao1 for 查询1open youbiao1fetch next from youbiao1 into 变量while @@FETCH_STATUS = 0begin 里面一次套用end--临时表declare @ID intset @ID = 1while Exists(select * from 表)begin --处理 -- set @ID = @ID 1end
mysql使用存储过程,循环查找数据?
delimiter $$mysql>mysql> CREATE PROCEDURE myProc() //创建while循环的存储过程 if分支语句示例-> BEGIN->-> DECLARE i int-> SET i=1-> loop1: WHILE i IF MOD(i,2)0 THEN /*Even number - try again*/-> SELECT CONCAT(i," is an odd number")-> END IF-> SET i=i 1-> END WHILE loop1-> END$$Query OK, 0 rows affected (0.00 sec)这种也可以
mysql存储过程循环执行查询 mysql结果集合并 mysql_query参数
版权声明:本文内容由互联网用户自发贡献,本站不承担相关法律责任.如有侵权/违法内容,本站将立刻删除。