IF EXISTS (SELECT 1 FROM 表名 WHERE 条件) UPDATE 表名 SET 字段=值 WHERE 条件 ELSE INSERT INTO 表名(字段) VALUES(值)
真实使用举例:
if exists(select 1 from [UserRules] where UserID=@UserID) update [UserRules] set [AttendanceRulesID]=@AttendanceRulesID where UserID=@UserID else insert into [UserRules] (UserID,AttendanceRulesID) Values(@UserID,@AttendanceRulesID)
时间: 2024-10-05 10:47:42