摘要: declare @i int; declare @s nvarchar(max) set @i=0; set @s='xxxx'; select @i=count(*) from A where tiaoma=@s; if(@i>0) begin select * from A where tiao 阅读全文
posted @ 2021-07-12 10:47 路边有一棵草 阅读(166) 评论(0) 推荐(0) 编辑