sql-server – SQL Server SP – “IN”数组列表的Pass参数？

发布时间：2020-12-12 06:39:09 所属栏目：MsSql教程来源：网络整理

导读：有没有办法将值数组作为SQL Server 2005的单个参数传递给SP的IN部分？例如：从MyTable中选择* ID IN(@MyValueArray) 解决方法在2005年及更早版本中,您不能将数组作为参数传递给存储过程,但要模拟此功能,请将逗号分隔的ID列表作为VARCHAR参数传递.然后,您需

有没有办法将值数组作为SQL Server 2005的单个参数传递给SP的IN部分？

例如：从MyTable中选择* ID IN(@MyValueArray)

解决方法

在2005年及更早版本中,您不能将数组作为参数传递给存储过程,但要模拟此功能,请将逗号分隔的ID列表作为VARCHAR参数传递.然后,您需要解析此列表,将每个id添加到变量表中.然后在表的结果上使用IN.这不是一个优雅的解决方案,但它是你能做的最好的.

DECLARE @List TABLE (ID INT)

INSERT @List VALUES ('123')
INSERT @List VALUES ('12')

SELECT *
FROM
    MyTable
WHERE
    MyTableID IN (SELECT ID FROM @List)

这最好通过创建一个函数来实现,该函数将id列表作为字符串接收并将ID列表作为表返回.

IF EXISTS(
    SELECT *
    FROM sysobjects
    WHERE name = 'ParseIDArray')
BEGIN
    DROP FUNCTION ParseIDArray
END
GO

CREATE FUNCTION [dbo].[ParseIDArray] (@IDList VARCHAR(8000))
RETURNS
    @IDListTable TABLE (ID INT)
AS
BEGIN

    DECLARE
        --@IDList VARCHAR(100),@LastCommaPosition INT,@NextCommaPosition INT,@EndOfStringPosition INT,@StartOfStringPosition INT,@LengthOfString INT,@IDString VARCHAR(100),@IDValue INT

    --SET @IDList = '11,12,113'

    SET @LastCommaPosition = 0
    SET @NextCommaPosition = -1

    IF LTRIM(RTRIM(@IDList)) <> ''
    BEGIN

        WHILE(@NextCommaPosition <> 0)
        BEGIN

            SET @NextCommaPosition = CHARINDEX(',',@IDList,@LastCommaPosition + 1)

            IF @NextCommaPosition = 0
                SET @EndOfStringPosition = LEN(@IDList)
            ELSE
                SET @EndOfStringPosition = @NextCommaPosition - 1

            SET @StartOfStringPosition  = @LastCommaPosition + 1
            SET @LengthOfString = (@EndOfStringPosition + 1) - @StartOfStringPosition

            SET @IDString =  SUBSTRING(@IDList,@StartOfStringPosition,@LengthOfString)                  

            IF @IDString <> ''
                INSERT @IDListTable VALUES(@IDString)

            SET @LastCommaPosition = @NextCommaPosition

        END --WHILE(@NextCommaPosition <> 0)

    END --IF LTRIM(RTRIM(@IDList)) <> ''

    RETURN

ErrorBlock:

    RETURN

END --FUNCTION

下面是创建使用此函数接收ID列表的存储过程的示例

IF EXISTS (SELECT * FROM sysobjects WHERE name = 'TestArrayParameter')
BEGIN
    DROP PROCEDURE TestArrayParameter
END
GO



CREATE PROCEDURE TestArrayParameter
    @ArrayParameter VARCHAR(8000)
AS
BEGIN


    SELECT *
    FROM TestTable123
    WHERE TestTblID IN (SELECT ID FROM [dbo].[ParseIDArray](@ArrayParameter))

    -- OR BETTER

    SELECT *
    FROM
        TestTable123 test
        INNER JOIN [dbo].[ParseIDArray](@ArrayParameter) list
         ON list.ID = test.TestTblID

END
GO

CREATE TABLE TestTable123  (TestTblID INT,TestTblVal VARCHAR(50))

INSERT TestTable123 VALUES (3,'Three')
INSERT TestTable123 VALUES (25,'Twenty Five')
INSERT TestTable123 VALUES (100,'One Hundred')

DECLARE @IDList VARCHAR(8000)

SET @IDList = '25,100'

EXEC TestArrayParameter @IDList

DROP TABLE TestTable123

（编辑：李大同）

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