使用触发器（包含XML）将DB2行复制到历史记录表中

Question

我想将包含XML列的行复制到历史记录表。似乎不可能这样做？！

我曾尝试：

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"); 

=>不允许由于插入BEFORE触发

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方法？

Answer 1

似乎没有解决方案，这只是数据库系统的限制。