Question

抱歉，很多代码即将出现..

我看到另一个使用输出参数的问题。我正在使用RETURN语句返回我想要使用的值。

我有一个存储过程InsertMessage，如下所示：

ALTER PROCEDURE dbo.InsertNewMessage

    (
    @messageText text,
    @dateTime DATETIME,
    @byEmail bit,
    @bySMS bit
    )

AS
    DECLARE @NewId int
    BEGIN
    BEGIN TRANSACTION

    INSERT INTO MessageSet VALUES (@byEmail, @bySMS, @dateTime, @messageText)
    SET @NewId = SCOPE_IDENTITY()
    COMMIT
    END

    RETURN @NewId

另一个存储过程使用：

ALTER PROCEDURE dbo.InsertMessageFromUserToGroup

    (
    @userEmail nvarchar(256),
    @groupId int,
    @messageText text,

    @bySMS bit,
    @byEmail bit
    )

AS
    --Inserts a new message to a group
    DECLARE @messageId int
    DECLARE @dateTime DATETIME = GETDATE()
    --First check if user is a part of the group
    IF NOT EXISTS (SELECT userEmail FROM UserToGroupSet WHERE userEmail = @userEmail AND groupId = @groupId)
        RETURN 'User not part of group'
    ELSE --User is a part of the group, add message
    BEGIN
        BEGIN TRANSACTION
            SET @messageId = [dbo].[InsertNewMessage](@messageText, @dateTime, @bySMS, @byEmail)
            INSERT INTO MessageToUser VALUES(@userEmail, @messageId)
            INSERT INTO MessageToGroup VALUES(@messageId, @groupId)
        COMMIT
    END

造成麻烦但我不确定如何处理的行就是这一行：

SET @messageId = [dbo].[InsertNewMessage](@messageText, @dateTime, @bySMS, @byEmail)

语法似乎没问题，因为我可以保存它。当我运行它时，我收到错误消息：

Running [dbo].[InsertMessageFromUserToGroup] ( @userEmail = test@test.com, @groupId = 5, @messageText = sdfsdf, @bySMS = false, @byEmail = true ).

Cannot find either column "dbo" or the user-defined function or aggregate "dbo.InsertNewMessage", or the name is ambiguous.
Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 0, current count = 1.
No rows affected.
(0 row(s) returned)
@RETURN_VALUE = 
Finished running [dbo].[InsertMessageFromUserToGroup].

似乎无法找到其他存储过程。我已经尝试了不同的方法来调用该过程，但其他一切都失败了。有什么建议吗？

Answer 1

尝试更改

SET @messageId = [dbo].[InsertNewMessage](@messageText, @dateTime, @bySMS, 
    @byEmail)

到

EXEC @messageId = [dbo].[InsertNewMessage] @messageText, @dateTime, @bySMS,
     @byEmail

请注意，SET已更改为EXEC，并且已从参数中删除了括号。

有关详细信息，请参阅本文末尾MSDN documenation中的示例。

从另一个存储过程中的存储过程中获取值

1 个答案: