Just out of curiosity, what is the performance of this? In MSSQL the only way to do something equivalent to this was to use a cursor. Cursors are painfully slow, so they are to be used as a last resort.
On what do you base that cursors are slow?
-- Alban Hertroys
---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ?
http://www.postgresql.org/docs/faq
