更新触发器上的插入记录

Question

当通过外部应用程序将记录插入数据库时​​尝试更新记录时遇到问题。

我需要从应用程序中的用户插入的记录从表 AERO_LOCATIONSTOCKMIN 中获取值 MinimumStock，该表是父位置和资产类型

LOCATIONSTOCKMINID  ASSETTYPEID   LOCATIONID    MINIMUMSTOCK
   54000000001      54000000043   43200000357      12.00
   54000000002      54000000043   43200000883      6.00

这是目的：当用户尝试在Asset 表上插入记录（通过外部应用程序）时，触发器必须检查用户是否为该Asset 选择了位置。如果是这样，触发器必须检索所选位置的父位置，并检查是否为此 AssetType 和此父位置定义了最低库存。

如果全部满足，触发器必须将字段UDFText01设置为上表中定义的最小库存。

这是我迄今为止尝试过的。触发器很好地检查了需求，但在尝试 UPDATE 并引发以下错误时失败：

The transaction ended in the trigger. The batch has been aborted.

我尝试以多种方式修改 UPDATE 语句，但它们都引发了相同的错误消息。

编辑

按照@Sean Lannge 的建议，我编辑了触发器以管理多个插入。触发器不再显示错误消息，但更改（插入）未保存到数据库中。

ALTER TRIGGER [spectwosuite].[TRI_ASSET_STOCKMIN] ON [spectwosuite].[ASSET]
FOR INSERT AS 
BEGIN
  IF (UPPER(USER) != 'SPECTWOREPLENG')

    DECLARE @assettypeid numeric(15);
    DECLARE @assetid numeric(15);
    DECLARE @locationid numeric(15);
    DECLARE @parentlocationid numeric(15);
    DECLARE @stockmin numeric(9,2);
    DECLARE @mistock varchar(100);


    DECLARE crs_ROWS CURSOR FOR
    SELECT ASSETID, ASSETTYPEID, LOCATIONID
    FROM inserted;

    OPEN crs_ROWS;
      FETCH NEXT FROM crs_ROWS INTO @assetid, @assettypeid, @locationid 
      WHILE (@@FETCH_STATUS = 0)
      BEGIN

            SELECT @parentlocationID = ParentLocationID FROM Location 
                    LEFT JOIN Asset ON Asset.LocationID = Location.LocationID
                    WHERE Asset.LocationID = @locationid;                   


            IF NOT EXISTS 
                (SELECT * FROM Location LEFT JOIN INSERTED AS i ON Location.LocationID = i.LocationID 
                    WHERE Location.LocationID = i.LocationID)
                BEGIN

                    RAISERROR ('Please fill the Location for the Asset.',16,1);
                    ROLLBACK;
                END
            ELSE            

                    IF EXISTS (SELECT MinimumStock FROM AERO_LOCATIONSTOCKMIN
                        WHERE AssetTypeID = @assettypeid AND LocationID = (SELECT ParentLocationID FROM Location WHERE LocationID = @locationID))

                        BEGIN

                            SELECT @stockmin = MinimumStock FROM AERO_LOCATIONSTOCKMIN
                                WHERE AssetTypeID = @assetTypeID AND LocationID = 
                                        (SELECT ParentLocationID FROM Location WHERE LocationID = @locationID);

                                SELECT @mistock= CONVERT(varchar(100),@stockmin);   
                                --RAISERROR (@mistock,16,1);            


                                UPDATE spectwosuite.ASSET
                                SET UDFText01 = @mistock 
                                FROM
                                     INSERTED I
                                INNER JOIN spectwosuite.ASSET T ON
                                     T.AssetID = I.AssetID

                            --UPDATE spectwosuite.ASSET SET UDFText01 = @mistock
                            --  FROM spectwosuite.ASSET AS A INNER JOIN inserted AS I
                            --  ON A.AssetID = I.AssetID;                   

                        END

                    ELSE
                            RAISERROR ('The parent Location for the Asset Type doesn't have minimum stock defined',16,1);
                            ROLLBACK;

       FETCH NEXT FROM crs_ROWS INTO @assetid, @assettypeid, @locationid; 
      END;
      CLOSE crs_ROWS;
      DEALLOCATE crs_ROWS;

END;

Answer 1

根据此处的扩展讨论，看看这样的事情是否更接近你想要做的事情。

ALTER TRIGGER [spectwosuite].[TRI_ASSET_STOCKMIN] ON [spectwosuite].[ASSET] FOR INSERT AS 
IF (UPPER(USER) != 'SPECTWOREPLENG')
BEGIN

    create table #MyInsertedCopy
    (
        --whatever columns go here that you want to display for error rows
        ErrorMessage varchar(50)
    )

    insert #MyInsertedCopy
    select i.* --use your real columns, not *
        , 'Please fill the Location for the Asset' as ErrorMessage
    from inserted i
    left join Location l on l.LocationID = i.LocationID 
    where l.LocationID IS NULL

    insert #MyInsertedCopy
    select i.* --use your real columns, not *
        , 'The parent location for that Asset doesn''t have minimum stock defined' as ErrorMessage
    from inserted i
    left join AERO_LOCATIONSTOCKMIN a on a.AssetTypeID = i.AssetID
    left join Location l on l.ParentLocationID = i.LocationID 
    where a.AssetTypeID is NULL

    update a
    set UDFText01 = MinimumStock 
    FROM INSERTED I
    INNER JOIN spectwosuite.ASSET T ON T.AssetID = I.AssetID
    INNER JOIN AERO_LOCATIONSTOCKMIN a on a.AssetTypeID = i.AssetID
    INNER JOIN Location l on l.ParentLocationID = i.LocationID 

    IF EXISTS(select * from #MyInsertedCopy) 
        --do something to report that there are rows that failed
        select * from #MyInsertedCopy
END