DB2 SQL代替更新触发器

Question

嗨，我有以下代码，用于创建DB2 SQL触发器，已扩展

connect to sample
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drop TABLE countries
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drop view view1
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drop TRIGGER update_view1_2
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CREATE TABLE countries (id int, country varchar(50), region varchar (50), average_temp int)
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CREATE VIEW view1 (id, continent, temperature) as SELECT id, region, average_temp from countries
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CREATE TRIGGER update_view1_2
INSTEAD OF UPDATE ON view1
REFERENCING OLD AS o NEW AS n
FOR EACH ROW
MODE DB2SQL
BEGIN ATOMIC
    UPDATE countries c
    SET c.region = n.continent
    WHERE c.region = o.continent;
END
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我使用以下命令运行此脚本： db2 -td@ -v -f trig_ipd_wiev1.db2 -z procs.log

- - 问题解决了 - -

Answer 1

问题是，有SET c.region = n.region WHERE c.region = o.region; 而不是SET c.region = n.continent WHERE c.region = o.continent;