Question

更新后我在CONTENT表上触发了一个触发器。在MESSAGE列值更新触发器的表中，必须根据国家/地区将包含CONTENT_ID和MESSAGE的新记录插入4个不同表中的一个表中。将根据CONTENT表中的CONTENT_ID列值从CONTENT_COUNTRY_INFO表中检索国家/地区值。 4个不同的表是CONTENT_IN，CONTENT_MY，CONTENT_CN，CONTENT_HK。我是按照以下方式做的。但不知何故，很少行没有插入区域表，也没有将MESSAGE列更新为＆＃34; Moved＆＃34;。

ALTER TRIGGER CONTENT_MOVE_TRG ON CONTENT
AFTER UPDATE
AS
BEGIN
    SET NOCOUNT ON
    DECLARE @V_CONTENTID INT
    DECLARE @V_COUNTRY VARCHAR(10)
    DECLARE CONTENTIDS CURSOR LOCAL FOR SELECT TR.CONTENT_ID FROM CONTENT TR INNER JOIN INSERTED I ON TR.CONTENT_ID = I.CONTENT_ID
    OPEN CONTENTIDS
    FETCH NEXT FROM CONTENTIDS INTO @V_CONTENTID
    WHILE @@FETCH_STATUS = 0
    BEGIN
        SELECT @V_COUNTRY = COUNTRY_NAME FROM CONTENT_COUNTRY_INFO WHERE CONTENT_ID = @V_CONTENTID
        IF @V_COUNTRY = 'CN' BEGIN
            INSERT INTO CONTENT_CN(CONTENT_ID,MESSAGE) SELECT CONTENT_ID, MESSAGE FROM CONTENT WHERE CONTENT_ID = @V_CONTENTID
        END
        ELSE IF @V_COUNTRY = 'IN' BEGIN
            INSERT INTO CONTENT_IN(CONTENT_ID,MESSAGE) SELECT CONTENT_ID, MESSAGE FROM CONTENT WHERE CONTENT_ID = @V_CONTENTID
        END
        ELSE IF @V_COUNTRY = 'HK' BEGIN
            INSERT INTO CONTENT_HK(CONTENT_ID,MESSAGE) SELECT CONTENT_ID, MESSAGE FROM CONTENT WHERE CONTENT_ID = @V_CONTENTID
        END
        ELSE IF @V_COUNTRY = 'MY' BEGIN
            INSERT INTO CONTENT_MY(CONTENT_ID,MESSAGE) SELECT CONTENT_ID, MESSAGE FROM CONTENT WHERE CONTENT_ID = @V_CONTENTID
        END
        FETCH NEXT FROM CONTENTIDS INTO @V_CONTENTID
    END
    UPDATE CONTENT SET MESSAGE='Moved' WHERE CONTENT_ID IN (SELECT TR.CONTENT_ID FROM CONTENT TR INNER JOIN INSERTED I ON TR.CONTENT_ID = I.CONTENT_ID)
    CLOSE CONTENTIDS
    DEALLOCATE CONTENTIDS
END

我担心使用游标会出现这类问题，寻找动态查询将记录移动到各自的区域表中。任何想法都会有所帮助！

谢谢，
拉朱

不同表的触发器中的动态查询

0 个答案: