@mallory_cormier
One of the fastest ways to remove duplicates from a table in MySQL is to use the DELETE
statement with a self-join. Here is an example:
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DELETE t1 FROM your_table t1 JOIN your_table t2 WHERE t1.id > t2.id AND t1.column_name = t2.column_name; |
In this query, your_table
is the name of your table, id
is the primary key or unique identifier, and column_name
is the column where duplicates are being identified.
This query will delete all rows except for one of each duplicate row, keeping only the row with the lowest id
value. Make sure to back up your data before running this query to prevent accidental data loss.