'Create VIEW' must be the only statement in the batch

问题

I have the following SQL:

    ALTER PROCEDURE [dbo].[usp_gettasks]  
    @ID varchar(50)

    AS
     declare @PDate Date


     WHILE (DATEPART(DW, @PDate) =  1 OR DATEPART(DW, @PDate) =  7 )
     BEGIN

      set @PDate =  DATEADD(day, 1, @PDate)

     END

     CREATE VIEW tblList AS

     select tt.ItemOrder,tt.DisplayVal,  DATEADD(day, tt.DaysDue, @PDate)  from tblLine tt
     where tt.ID = 1 

I get the following message:

Incorrect syntax: 'Create VIEW' must be the only statement in the batch

I tried putting GO before Create View, but then it can't recognize the value of PDate.

回答1:

To create a view in a stored procedure, you need to do this in dynamic SQL (especially since the view itself can't take a variable).

DECLARE @sql NVARCHAR(MAX);
SET @sql = 'CREATE VIEW dbo.tblList 
    AS
      SELECT ItemOrder, DisplayVal, 
        SomeAlias = DATEADD(DAY, DaysDue, ''' + CONVERT(CHAR(8), @PDate, 112)
      + ''') FROM dbo.tblLine WHERE ID = 1;';
EXEC sp_executesql @sql;

But once you call this stored procedure a second time, it's going to fail, because you are trying to create a view named dbo.tblList and that view already exists. Perhaps you can elaborate on what you're trying to, at a higher level than "I want to create a view in a stored procedure."

来源：https://stackoverflow.com/questions/11886321/create-view-must-be-the-only-statement-in-the-batch