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MySQL: Find Duplicates
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| -- Duplicate count | |
| SELECT <column>, COUNT(*) count FROM <table> GROUP BY <column> HAVING count > 1; | |
| -- Find duplicates | |
| SELECT * FROM <table> | |
| INNER JOIN (SELECT <column> FROM <table> | |
| GROUP BY <column> HAVING count(id) > 1) duplicate ON <table1>.<column> = duplicate.<column> |
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