am Wed, dem 21.02.2007, um 19:21:09 +0100 mailte Sergio Andreozzi folgendes: > Dear all, > > given a column which type is for instance varchar(20)[], is there any SQL > command that let me generate the list of distinct scalar values? > > > e.g.: > col1 > row 1: (aaa, bb, c) > row 2: (dddd, eeee) > row 3: (aaa, eeee) > > the query should return: > > aaa > bb > c > dddd > eeee > > if not, I guess the approach is to use stored procedure. Any code snippet/ > suggestion?
You can, for each row, split the array into the elements with a loop over array_lower, array_upper, returns this element. Yes, this is a setof-function. Than you can do a simple select distinct * from your_function. I hope this may help you. Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
