sql - T-SQL RETURN 不起作用

Question

我的 T-SQL 有问题，无法查看表中是否存在该项目，但出现错误消息

Msg 178, Level 15, State 1, Line 2 A RETURN statement with a return value cannot be used in this context. Msg 178, Level 15, State 1, Line 4 A RETURN statement with a return value cannot be used in this context.

IF EXISTS(SELECT COUNT(timesheetID)
FROM [TaskManagementSystem_DB].[dbo].[Timesheet_entry]
WHERE userID ='12'  AND CONVERT(date, startTimeStamp)=CONVERT(date, getdate())) 
    RETURN 1
else
RETURN 0

整个代码:

ALTER PROCEDURE [dbo].[CheckTimesheetIsEXISTS_forUser]  @UserID uniqueidentifier

AS 
BEGIN    
-- SET NOCOUNT ON added to prevent extra result sets from   
-- interfering with SELECT statements.  SET NOCOUNT ON;

IF EXISTS(SELECT COUNT(timesheetID) FROM 
 [TaskManagementSystem_DB].[dbo].[Timesheet_entry] 
 WHERE userID
  ='3fd971f7-e6e8-40fe-a90d-a7c9df8bf7b5'  
 AND CONVERT(date, startTimeStamp)=CONVERT(date, getdate()))



  RETURN 1 
else 
 RETURN 0 
END

Answer 1

试试这个:

ALTER PROCEDURE [dbo].[CheckTimesheetIsEXISTS_forUser]  @UserID uniqueidentifier

AS 
BEGIN   

SELECT CASE WHEN COUNT(timesheetID) > 0 THEN 1 ELSE 0 END AS isExists
    FROM [TaskManagementSystem_DB].[dbo].[Timesheet_entry]
    WHERE userID = @UserID  AND CONVERT(date, startTimeStamp)=
     CONVERT(date, getdate())

END