cruzer45/postgres delete duplicate rows.sql

Created May 20, 2016 17:36

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Postgres Delete duplicate rows

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postgres delete duplicate rows.sql

-DELETE FROM tablename
-WHERE id IN (
-  SELECT id FROM (
-    SELECT id, ROW_NUMBER() OVER (partition BY column1, column2, column3 ORDER BY id) AS rnum
-    FROM tablename
-  ) t
-  WHERE t.rnum > 1
-);

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