SqlServer try catch 捕獲觸發器\存儲過程異常,結合 transaction 事務

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ALTER trigger [dbo].[tgr_SG_Gathering_update]
on [dbo].[SG_Gathering]
    for update --更新觸發
as
    --定義變量
    declare @fMoney float,
    @fQuantity float,
    @vShop varchar(20),
    @vEmpCode varchar(20),
    @vSPosition varchar(20),
    @vSPCode varchar(20),
    @SetID int,
    @Amount float,
    @Coupon varchar(20),
    @RJ varchar(10),
    @DiscountNum int;

    begin try
        begin transaction
            if (update(bCancel)) --bCancel日結動作
                begin
                    --變量取值
                    select @RJ=bTotal,@fMoney=fMoney,@vShop=vShop,@vEmpCode=vEmpCode,@vSPCode=vSPCode,@fQuantity=fQuantity,@vSPosition=vSPosition 
                    from inserted;

                    INSERT INTO [NoahERP].dbo.DiscountCouponPool( SetID,Coupon,CardType,Type,PP,MadeType,Rate,Price,Amount,StartDate,EndDate,
                                CreateDate,UseDate,ModifyPerson,IsDel,ImgUrl,UsedImgUrl,OverImgUrl,ClothesCounts) 
                        SELECT  S.ID,@Coupon,S.CardType,S.[Type],S.[PP],S.MadeType,P.Rate,P.Price,S.Amount,S.StartDate,S.EndDate,
                                GETDATE(),NULL,'',0,P.ImgUrl,P.UsedImgUrl,P.OverImgUrl,S.ClothesCounts 
                                FROM [NoahERP].[dbo].[DiscountCouponSet] S 
                                left join  NoahERP.dbo.DiscountCouponPrice P on S.ID=P.SetID 
                                where  CONVERT(date, GETDATE()) >= CONVERT(date,S.StartDate) AND DATEADD(DAY,-1,CONVERT(DATE,GETDATE())) < CONVERT(date,S.EndDate)  
                                AND  S.IsStop = 0 And S.Type=1  AND S.ID=@SetID;
                end
        commit transaction    --提交事務
    end try
    begin catch

    if(@@TRANCOUNT>0)
        begin
            rollback transaction;--出現錯誤回滾
        end
    --記錄錯誤信息到[SG_GatheringLog]表
    insert into [dbo].[SG_GatheringLog](ErrorNumber,
                                        ErrorSeverity,
                                        ErrorState,
                                        ErrorProcedure,
                                        ErrorLine,
                                        ErrorMessage)
    select ERROR_NUMBER()  ErrorNumber,            --返回導致運行 CATCH 塊的錯誤消息的錯誤號
           ERROR_SEVERITY()  ErrorSeverity,        --返回導致 CATCH 塊運行的錯誤消息的嚴重級別
           ERROR_STATE()  ErrorState,            --返回導致 CATCH 塊運行的錯誤消息的狀態號
           ERROR_PROCEDURE()  ErrorProcedure,    --返回出現錯誤的存儲過程或觸發器名稱
           ERROR_LINE()  ErrorLine,                --返回發生錯誤的行號
           ERROR_MESSAGE()  ErrorMessage        --返回導致 CATCH 塊運行的錯誤消息的完整文本
    end catch