alter table a add column b4 varchar2(10);update a
set a.b4=(
select b.b4
from b
where a.ab=b.ab
) where a.b4 is null
and exists(
select b.b4
from b
where a.ab=b.ab
);COMMIT;
set a.b4=(
select b.b4
from b
where a.ab=b.ab
) where a.b4 is null
and exists(
select b.b4
from b
where a.ab=b.ab
);COMMIT;
解决方案 »
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