Question

在下面的代码中，我使用逗号传递多个值，分隔给@i_CustomerGroupID，将一个值传递给@ i_LocationID.In，我面临一个问题“子查询返回的值超过1。当子查询跟随=时，不允许这样做！ =，＆lt;，＆lt; =，＆gt;，＆gt; =或当子查询用作表达式时。该声明已被终止。“。请帮助我解决问题。

ALTER PROCEDURE [dbo].[spInsertCustomerGroupLocationMap]
    -- Add the parameters for the stored procedure here
    @i_LocationID int,
    @i_CustomerGroupID varchar(100)

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

    -- Insert statements for procedure here
    IF NOT EXISTS (SELECT 1 FROM CustomerGroupLocationMap WHERE LocationID = @i_LocationID AND CustomerGroupID = @i_CustomerGroupID)
    BEGIN

        INSERT INTO CustomerGroupLocationMap (LocationID, CustomerGroupID) VALUES (@i_LocationID, (SELECT * FROM dbo.CSVToTable(@i_CustomerGroupID)));

    END
END

Answer 1

您想使用insert . . . select：

    INSERT INTO CustomerGroupLocationMap(LocationID, CustomerGroupID) 
        SELECT @i_LocationID, t.*
        FROM dbo.CSVToTable(@i_CustomerGroupID) t;

您的函数dbo.CSVToTable()返回多个值（我假设只有一列）。正确的语法是insert . . . select。

作为一个说明，实际上不需要insert . . . values。即使只有常数，也可以使用insert . . . select。

Answer 2

IF NOT EXISTS (SELECT TOP 1 FROM CustomerGroupLocationMap WHERE LocationID = @i_LocationID AND CustomerGroupID = @i_CustomerGroupID)
BEGIN

    INSERT INTO CustomerGroupLocationMap (LocationID, CustomerGroupID) VALUES (@i_LocationID, (SELECT * FROM dbo.CSVToTable(@i_CustomerGroupID)));

END

Answer 3

您需要重写存在的查询和插入查询 -

IF NOT EXISTS (SELECT 1 FROM CustomerGroupLocationMap WHERE LocationID = @i_LocationID AND CustomerGroupID IN (SELECT *
    FROM dbo.CSVToTable(@i_CustomerGroupID) ))
BEGIN

    INSERT INTO CustomerGroupLocationMap (LocationID, CustomerGroupID) 
    SELECT @i_LocationID, i.* FROM dbo.CSVToTable(@i_CustomerGroupID) i;

END

Sql插入错误 - ＆＃34;子查询返回的值超过1＆＃34;

3 个答案: