return temporary table from SQL stored procedure

Question

I wrote this stored procedure:

USE [FAB28]
GO
/****** Object:  StoredProcedure [dbo].[spPLCIOFilter2]    Script Date: 12/06/2011 08:00:28 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Procedure [dbo].[spPLCIOFilter2]
(
    @filter1 VARCHAR(50) = '%',
    @filter2 VARCHAR(50) = '%',
    @slot VARCHAR(50) = '%' 
)
AS
BEGIN

    CREATE TABLE #temp
    ( 
         "PLC RIO" char(20)
         ,SIGNAL varchar(6)
         ,RACK char(2)
         ,SLOT char(2)
         ,POINT char(2)
         ,"CARD" char(20)
         ,TAG char(30)
         ,PROJ char(10)
         ,"DESCRIPTION" char(100)
         ,"ADDRESS" varchar(22)
     )

    INSERT INTO #temp
    SELECT
       [PLC] "PLC RIO"
      ,[SIGNAL] SIGNAL
      ,[RACK] RACK
      ,[SLOT] SLOT
      ,[POINT] POINT
      ,[CARD] "CARD"
      ,[TAG] TAG
      ,[PROJ] PROJ
      ,[DESCRIPTION] "DESCRIPTION"
      ,[ADDRESS] "ADDRESS"
    FROM [FAB28].[dbo].[PLC_TAGS2]
    WHERE [PLC] <> ''
    and [PLC] LIKE '%' + @filter1 + '%'
    and [PLC] LIKE '%' + @filter2 + '%'
    and [SLOT] LIKE '%' + @slot + '%'
    ORDER BY [PLC],[RACK],[SLOT],[POINT]

END

I want to return the temporary table #temp and return #temp doesn't work. Also I want that the temp table will be dropped at the end of the function.

How can I do it?

Answer 1

You would add:

select * from #temp

at the end of the procedure.

In your SP, the temporary table looks redundant. You could just replace the insert statement with a select to return the data immediately.

Answer 2

You don't return temp tables like this from stored procedures. You'd have to create the temp table first, call the proc, read the temp table afterwards: all on the same connection so it stays in scope

However, why not just SELECT in the stored proc and consume the result set normally? You don't need a temp table here

ALTER Procedure [dbo].[spPLCIOFilter2]
(
    @filter1 VARCHAR(50) = '%',
    @filter2 VARCHAR(50) = '%',
    @slot VARCHAR(50) = '%' 
)
AS
BEGIN
    SELECT
       [PLC] "PLC RIO"
      ,[SIGNAL] SIGNAL
      ,[RACK] RACK
      ,[SLOT] SLOT
      ,[POINT] POINT
      ,[CARD] "CARD"
      ,[TAG] TAG
      ,[PROJ] PROJ
      ,[DESCRIPTION] "DESCRIPTION"
      ,[ADDRESS] "ADDRESS"
    FROM [FAB28].[dbo].[PLC_TAGS2]
    WHERE [PLC] <> ''
    and [PLC] LIKE '%' + @filter1 + '%'
    and [PLC] LIKE '%' + @filter2 + '%'
    and [SLOT] LIKE '%' + @slot + '%'
    ORDER BY [PLC],[RACK],[SLOT],[POINT]
END

Answer 3

问题的第二部分-存储过程完成后，将自动删除在存储过程中创建的任何临时表-您无需执行任何其他操作。