Mysql पुराने डुप्लिकेट हटाएं

निम्नलिखित (अप्रयुक्त) काम करना चाहिए:

DELETE FROM someTable WHERE EXISTS ( SELECT id FROM someTable AS subqTable WHERE
subqTable.id = someTable.id
AND subqTable.ean = someTable.ean
-- and other equality comparisons
AND subqTable.date AFTER someTable.date)