On Jan 13, 2008 12:05 AM, I said
> It's all in the docs:
> http://www.postgresql.org/docs/8.2/static/sql-update.html

To clarify, you can use the direct form, without using a subselect:

UPDATE table1 t1
SET blah = 1
FROM table2 t2
  JOIN table3 t3
  ON t2.id = t3.t2id
WHERE t1.id = t2.t1id

Lookup "fromlist" (without the quotes) on the quoted link.

Regards.

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