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itpub.net
10 年
TIMESTAMP (6) WITH TIME ZONE数据类型 跨数据库传输
因为你的插入语句的WHERE条件中,只有 a.RESULT_DATE=b.machinetime的条件。 这个怎么理解呢, 我只是用这个not exists 来判断不要把重复的数据插进去,怎么会影响到两个表的时间列值传输的时候变了。 这个怎么理解呢, 我只是用这个not exists 来判断不要把重复的数据 ...
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