UPDATE tablea a
JOIN tableb b
SET a.val = b.val
WHERE b.id = a.id
转载于:https://www.cnblogs.com/go4mi/p/6297054.html
UPDATE tablea a
JOIN tableb b
SET a.val = b.val
WHERE b.id = a.id
转载于:https://www.cnblogs.com/go4mi/p/6297054.html
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