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How to delete duplicate rows with MySQL
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| DELETE n1 | |
| FROM table1 n1, table1 n2 | |
| WHERE n1.id > n2.id | |
| AND n1.id_name = n2.id_name; | |
| /* | |
| * With this query you can | |
| * delete the duplicate rows in one table (table1) | |
| * ´WHERE n1.id > n2.id´ with this line you can keep the first row | |
| * if you want keep the second row you need use ´WHERE n1.id < n2.id´ | |
| */ |
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