具有1个声明值、2个update语句和1个insert语句的Sql存储过程

我在下面的存储过程中有这些错误

选择时，只能在选择列表中指定一个表达式 子查询不随EXISTS一起引入。列的名称或编号 提供的值与表定义不匹配

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你在这里有什么问题？我有这些错误。当子查询未引入EXISTS时，只能在选择列表中指定一个表达式。提供的值的列名或数量与表定义不匹配。我无法运行此sql过程。您不能将*选择到单个变量中：Set@b_ComNo=select*from tbl_TeleCom，其中Type=@typetha谢。但我有一个错误！

Create PROCEDURE [dbo].[tbl_TeleCom_UpdateTeleComNo]

    @type varchar(100) ,
    @comNo varchar(100),
    @status bit

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

    Declare @b_ComNo varchar(100)
    Set @b_ComNo = (Select * from tbl_TeleCom where Type = @type)

    IF @b_ComNo IS NOT NULL
    BEGIN
        Insert Into tbl_ComNoHistory 
        Select B_ComNo, B_StartTime, B_EndTime
        from tbl_TeleCom
        where Type = @type 
        Group By B_ComNo, B_StartTime, B_EndTime    
    END

        Update tbl_Balance Set
        Status = 0
        from tbl_Balance
        Join tbl_TeleCom On tbl_TeleCom.CurrentComNo = tbl_Balance.ComNo
        And tbl_TeleCom.Type = @type

        Update tbl_TeleCom Set 
        CurrentComNo = @comNo,
        CurrentTime = GETDATE(),
        B_ComNo = CurrentComNo,
        B_StartTime = CurrentTime,
        B_EndTime = GETDATE()
        where Type =@type

        Update tbl_Balance Set
        Status = @status
        from tbl_Balance
        Join tbl_TeleCom On tbl_TeleCom.CurrentComNo = tbl_Balance.ComNo
        And tbl_TeleCom.Type = @type
END

Create PROCEDURE [dbo].[tbl_TeleCom_UpdateTeleComNo]

    @type varchar(100) ,
    @comNo varchar(100),
    @status bit

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

    Declare @b_ComNo varchar(100)
    SELECT @b_ComNo = ComNo from tbl_TeleCom where Type = @type

    IF @b_ComNo IS NOT NULL
    BEGIN
        Insert Into tbl_ComNoHistory 
        Select B_ComNo, B_StartTime, B_EndTime
        from tbl_TeleCom
        where Type = @type 
        Group By B_ComNo, B_StartTime, B_EndTime    
    END

        Update tbl_Balance Set
        Status = 0
        from tbl_Balance
        Join tbl_TeleCom On tbl_TeleCom.CurrentComNo = tbl_Balance.ComNo
        And tbl_TeleCom.Type = @type

        Update tbl_TeleCom Set 
        CurrentComNo = @comNo,
        CurrentTime = GETDATE(),
        B_ComNo = CurrentComNo,
        B_StartTime = CurrentTime,
        B_EndTime = GETDATE()
        where Type =@type

        Update tbl_Balance Set
        Status = @status
        from tbl_Balance
        Join tbl_TeleCom On tbl_TeleCom.CurrentComNo = tbl_Balance.ComNo
        And tbl_TeleCom.Type = @type
END