Duplicate key violates unique constraint

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Error: ошибка: ошибка синтаксиса (примерное положение: "1"). Duplicate key value violates unique constraint. Как можна ставить фон на python & django. Pg_restore error: duplicate key value violates unique constraint. Разница между primary key и unique.	$Duplicate key value violates unique constraint. Бизнес пак ошибка violation of primary or unique key. Duplicate key violates unique constraint. Pg_restore error: duplicate key value violates unique constraint. "42601: ошибка синтаксиса (примерное положение: \"select\")",.$ Duplicate key value violates unique constraint. Бизнес пак ошибка violation of primary or unique key. Duplicate key violates unique constraint. Pg_restore error: duplicate key value violates unique constraint. "42601: ошибка синтаксиса (примерное положение: \"select\")",.
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