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postgres duplicate key value violates unique constraint already exists

SELECT setval('the_primary_key_sequence', (SELECT MAX(the_primary_key) FROM the_table)+1);
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IntegrityError at duplicate key value violates unique constraint DETAIL: Key id already exists.

# Reset the counter of a table named yourTable to start at id # 1453
ALTER SEQUENCE yourTable_id_seq RESTART WITH 1453
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