SELECT tab.id2,tab.id3
FROM tab JOIN (SELECT id1, id2
FROM tab
GROUP BY id1, id2
HAVING COUNT (1) > 1) a ON tab.id1 = a.id1
AND tab.id2 = a.id2
FROM tab JOIN (SELECT id1, id2
FROM tab
GROUP BY id1, id2
HAVING COUNT (1) > 1) a ON tab.id1 = a.id1
AND tab.id2 = a.id2
解决方案 »
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