试一下:
update hz_qyda a
set qybt = (select qymc from hz_qyhznr b where b.nbxh = a.nbxh)
where exists (select 1 from hz_qyhznr c where c.nbxh = a.nbxh);
update hz_qyda a
set qybt = (select qymc from hz_qyhznr b where b.nbxh = a.nbxh)
where exists (select 1 from hz_qyhznr c where c.nbxh = a.nbxh);
解决方案 »
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