To delete dupplicate records in SQL, the following sequence of commands will do the trick:
CREATE TABLE temp AS SELECT DISTINCT * FROM table_to_deduplicate; DROP TABLE table_to_deduplicate; ALTER TABLE temp RENAME TO table_to_deduplicate;
Be mindful of the fact that this process will not preserve the constraints on the original table. So if you have indexes, NOT NULL attributes, primary keys, foreign keys, you’ll have to recreate them.
