Re: UPDATE WITH ORDER BY - Mailing list pgsql-sql

From Greg Sabino Mullane
Subject Re: UPDATE WITH ORDER BY
Date
Msg-id f4c00ccf32fdcc228c81c684be9b58d5@biglumber.com
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In response to UPDATE WITH ORDER BY  (Rodrigo Carvalhaes <grupos@carvalhaes.net>)
List pgsql-sql
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> I need to make an UPDATE on a column reordering it with a sequence
> using order by a description
> ...

BEGIN;
CREATE SEQUENCE fruit_seq;
CREATE TABLE newfruit AS SELECT nextval('fruit_seq')::int AS newid, * FROM fruit ORDER BY lower(description);
ALTER TABLE newfruit DROP COLUMN id;
ALTER TABLE newfruit RENAME COLUMN newid TO id;
DROP TABLE fruit;
ALTER TABLE newfruit RENAME TO fruit;
DROP SEQUENCE fruit_seq;
COMMIT;
SELECT * FROM fruit ORDER BY id ASC;


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Greg Sabino Mullane greg@turnstep.com
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