Well this should work but I tried it and it didn't. SELECT DISTINCT COUNT(*) FROM mytable;
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Havasvölgyi Ottó Sent: Saturday, December 10, 2005 7:07 PM To: Jaime Casanova Cc: pgsql-sql@postgresql.org Subject: Re: [SQL] select count of distinct rows Hi, Yes, I need to compare all fields. Well, in this case it does not. Is this impossible? Thanks, Otto ----- Original Message ----- From: "Jaime Casanova" <[EMAIL PROTECTED]> To: "Havasvölgyi Ottó" <[EMAIL PROTECTED]> Cc: <pgsql-sql@postgresql.org> Sent: Sunday, December 11, 2005 1:57 AM Subject: Re: [SQL] select count of distinct rows On 12/10/05, Havasvölgyi Ottó <[EMAIL PROTECTED]> wrote: > Hi, > > I would like to select the count of distinct rows in a table. > > SELECT COUNT(DISTINCT *) FROM mytable; > are really all the fields distincts? the table doesn't have a pk? > This does not work. How can I do it with Postgres? > > Thanks, > Otto > -- regards, Jaime Casanova (DBA: DataBase Aniquilator ;) ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.13.13/197 - Release Date: 12/9/2005 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.13.13/197 - Release Date: 12/9/2005 ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org
