Thread: Selecting from two unrelated tables
I have two tables: items: id, title, added, ... news: id, headline, datetime, ... I'd like to select the latest 25 combined records from both tables. Is there a way to do this using just select? Thanks, csn __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
CSN wrote: > I have two tables: > > items: id, title, added, ... > news: id, headline, datetime, ... > > I'd like to select the latest 25 combined records from both tables. Is there a way to do this > using just select? > > Thanks, > csn > Maybe something like this? select id,title_headline,dt from ( select id,title as title_headline,added as dt from ... union all select id,headline as title_headline,datetime as dt from ...) as a order by dt limit 25;
You can use an union if the column types match {...off the top of my head...} select id, title, added as sortcol from table1 union select id, headline, datetime as sortcol from table2 order by sortcol limit 25; John CSN wrote: > I have two tables: > > items: id, title, added, ... > news: id, headline, datetime, ... > > I'd like to select the latest 25 combined records from both tables. Is there a way to do this > using just select? > > Thanks, > csn > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Have you searched our list archives? > > http://archives.postgresql.org