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lv10/gist:d9a94f6a949e65a9323a

Last active August 29, 2015 14:02
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Delete duplicates from a table without primary key SQL
Raw
gistfile1.sql
DELETE FROM claim_rates
WHERE ctid IN (SELECT
ctid
FROM (SELECT
ctid,
ROW_NUMBER()
OVER (
PARTITION BY claim_tag, rate_type, pricing_record_id
ORDER BY claim_tag, rate_type, pricing_record_id) AS rnum
FROM claim_rates) t
WHERE t.rnum > 1);
Documentation here:
http://wiki.postgresql.org/wiki/Deleting_duplicates
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