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我想将包含 XML 列的行复制到历史记录表。似乎不可能做到这一点？！

我试过的：

CREATE TRIGGER MARTIN."Pages_I" BEFORE UPDATE OF "tstamp" ON MARTIN."Pages" REFERENCING OLD AS old_row FOR EACH ROW MODE DB2SQL SECURED
INSERT INTO "MARTIN"."HistoryPages" VALUES (old_row."pageId", (SELECT "pageXML" FROM "MARTIN"."Pages" WHERE "pageId" = old_row."pageId" LIMIT 1), old_row."tstamp");

=> 由于 BEFORE 触发器中的 INSERT 而不允许

CREATE TRIGGER MARTIN."Pages_I" AFTER UPDATE OF "tstamp" ON MARTIN."Pages" REFERENCING OLD AS old_row FOR EACH ROW MODE DB2SQL SECURED
INSERT INTO "MARTIN"."HistoryPages" VALUES (old_row."pageId", old_row."pageXML", old_row."tstamp");

=> 不能引用 old_row."pageXML" 因为它是一个 xml 列

有没有解决这个困境的办法？

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这似乎没有解决方案，这只是数据库系统的限制。

于 2012-09-05T11:13:34.403 回答