小编mns*_*hab的帖子

我想写一个触发器：如果表中存在记录，则更新另一个表，如果不存在则插入到该表中，我在创建此触发器时出错：

CREATE TRIGGER TR_update_laststatus_on_membersservices ON [dbo].[activemembers] AFTER 
INSERT AS
BEGIN
IF EXISTS    
   (
   SELECT 1   
   FROM [membersservices] 
WHERE [membersservices].[mobilenumber] = INSERTED.[mobilenumber]
    AND [membersservices].[sid] = INSERTED.[sid]    
)    
BEGIN
  UPDATE membersservices  
  SET  membersservices.[last_status] = INSERTED.enable
  WHERE membersservices.mobilenumber=INSERTED.mobilenumber and membersservices.[sid]=INSERTED.[sid]
END
ELSE
    INSERT INTO membersservices VALUES ( INSERTED.[mobilenumber] ,INSERTED.[sid] ,INSERTED.[enable] , INSERTED.[dt] ); 
end