mysql remove duplicates
DELETE FROM table_name WHERE id NOT IN ( SELECT id FROM table_name GROUP BY field_1, field_2)
mysql remove duplicates
DELETE FROM table_name WHERE id NOT IN ( SELECT id FROM table_name GROUP BY field_1, field_2)
mysql delete older duplicates
delete test from test inner join ( select max(id) as lastId, email from test group by email having count(*) > 1) duplic on duplic.email = test.email where test.id < duplic.lastId;
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