如何将临时表作为参数传递到单独的存储过程中

一尘不染

如何将临时表作为参数传递到单独的存储过程中

sql

我有一个存储过程，需要一个输入参数@CategoryKeys varchar，并将其内容解析到临时表中#CategoryKeys。

        -- create the needed temp table.
        CREATE TABLE #CategoryKeys
          (
             CategoryKey SMALLINT
          );

        -- fill the temp table if necessary
        IF Len(rtrim(ltrim(@CategoryKeys))) > 0
          BEGIN
              INSERT INTO #CategoryKeys
                          (CategoryKey)
              SELECT value
              FROM   dbo.String_To_SmallInt_Table(@CategoryKeys, ',');
          END

如果临时表有行，我想将表传递到单独的存储过程中。我将如何在单独的过程中创建参数来保存临时表？

阅读 150

2021-03-17

共1个答案

一尘不染

当创建#TEMP表时，“作用域”大于创建它的过程。

下面是一个示例：

IF EXISTS 
    (
    SELECT * FROM INFORMATION_SCHEMA.ROUTINES
    WHERE ROUTINE_TYPE = N'PROCEDURE' and ROUTINE_SCHEMA = N'dbo' and ROUTINE_NAME = N'uspProc002'  
    )
BEGIN
    DROP PROCEDURE [dbo].[uspProc002]
END


GO

CREATE Procedure dbo.uspProc002 
AS

BEGIN

/* Uncomment this code if you want to be more explicit about bad "wiring" */
/*
IF OBJECT_ID('tempdb..#TableOne') IS NULL
begin
        THROW 51000, 'The procedure expects a temp table named #TableOne to already exist.', 1;  
end
*/

    /* Note, I did not Create #TableOne in this procedure.  It "pre-existed".  An if check will ensure that it is there.  */
    IF OBJECT_ID('tempdb..#TableOne') IS NOT NULL
    begin
        Insert into #TableOne ( SurrogateKey , NameOf ) select 2001, 'uspProc002'
    end

END


GO



IF EXISTS 
    (
    SELECT * FROM INFORMATION_SCHEMA.ROUTINES
    WHERE ROUTINE_TYPE = N'PROCEDURE' and ROUTINE_SCHEMA = N'dbo' and ROUTINE_NAME = N'uspProc001'  
    )
BEGIN
    DROP PROCEDURE [dbo].[uspProc001]
END


GO

CREATE Procedure dbo.uspProc001 (
@Param1 int
)
AS

BEGIN


    IF OBJECT_ID('tempdb..#TableOne') IS NOT NULL
    begin
            drop table #TableOne
    end


    CREATE TABLE #TableOne
    ( 
    SurrogateKey int , 
    NameOf varchar(12)
    )

    Insert into #TableOne ( SurrogateKey , NameOf ) select 1001, 'uspProc001'

    Select * from #TableOne

    EXEC dbo.uspProc002

    Select * from #TableOne

    IF OBJECT_ID('tempdb..#TableOne') IS NOT NULL
    begin
            drop table #TableOne
    end


END


GO




exec dbo.uspProc001 0

如此说来，请不要对其中的任何代码进行编码。它与全局变量的SQL等效，因此难以维护和容易出错。

2021-03-17