sql - 如何在存储过程中使用插入\删除表？

Question

我为多个表创建触发器。触发器具有相同的逻辑。我想使用一个通用的存储过程。但我不知道如何使用插入和删除表。

示例:

SET @FiledId = (SELECT FiledId FROM inserted)
begin tran
   update table with (serializable) set DateVersion = GETDATE()
   where FiledId = @FiledId

   if @@rowcount = 0
   begin
      insert table (FiledId) values (@FiledId)
   end
commit tran

Answer 1

您可以使用 table valued parameter存储触发器中插入/删除的值，并将其传递给过程。例如，如果您的过程中需要的只是唯一的FileID's:

CREATE TYPE FileIds AS TABLE
(
    FileId INT
);

-- Create the proc to use the type as a TVP
CREATE PROC commonProc(@FileIds AS FileIds READONLY)
    AS
    BEGIN
        UPDATE at
            SET at.DateVersion = CURRENT_TIMESTAMP
        FROM ATable at
            JOIN @FileIds fi
            ON at.FileID = fi.FileID;
    END

然后从触发器中传递插入/删除的 id，例如:

CREATE TRIGGER MyTrigger ON SomeTable FOR INSERT
AS
    BEGIN
        DECLARE @FileIds FileIDs;
        INSERT INTO @FileIds(FileID)
            SELECT DISTINCT FileID FROM INSERTED;
        EXEC commonProc @FileIds;
    END;