On Mon, 2006-11-20 at 19:46 -0300, Rodrigo Gonzalez wrote: > Not 100% sure.... > > select count(*) from (select distinct source_id from obis_sources) t SELECT count(source_id) FROM obis_sources GROUP BY source_id ? Joshua D. Drake > > Wm.A.Stafford wrote: > > I guess I should have been a bit more specific. Here is an example of > > the type of query I'm finding in the Oracle app and the results of my > > attempt to find a PostgreSQL equivalent. > > > > select count(unique 'source_id') from obis_sources; > > pgAdmin III query responds: > > ERROR: syntax error at or near "'source_id'" at character 23 > > > > select count(distinct 'source_id') from obis_sources; > > pgAdmin III query responds: > > ERROR: could not identify an equality operator for type "unknown" > > > > Thanks for all the help, > > -=bill > > > > > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 1: if posting/reading through Usenet, please send an appropriate > > subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your > > message can get through to the mailing list cleanly > > > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Have you searched our list archives? > > http://archives.postgresql.org/ > -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
