Обсуждение: Select MIN() & MAX()
In the documentation it mentions that Postgresql does not currently support MIN() and MAX() in the select list, but only in the where clause... will this be available in the next version of Postgresql and is there another way to do this in the current version? - Greg Greg Krasnow HNC Software Inc. Financial Solutions Group Senior Software Engineer Email: gak@hnc.com Direct Phone: 619.799.8341 Fax: 619.799.8036
On Wed, 12 Aug 1998, you wrote: >In the documentation it mentions that Postgresql does not currently support >MIN() and MAX() in the select list, but only in the where clause... will >this be available in the next version of Postgresql and is there another way >to do this in the current version? I don't know what is written in the doc, but in practice select MAX( Attr ) from Table; select MIN( Attr ) from Table; select AVG( Attr ) from Table; etc. works without problem for me (v.6.3.2) > >- Greg > > >Greg Krasnow >HNC Software Inc. >Financial Solutions Group >Senior Software Engineer >Email: gak@hnc.com >Direct Phone: 619.799.8341 >Fax: 619.799.8036 -- ===================================================== Dimitri KRAVTCHUK (dim) Sun Microsystems Benchmark Engineer France dimitri@France.Sun.COM =====================================================
> In the documentation it mentions that Postgresql does not currently support > MIN() and MAX() in the select list, but only in the where clause... will > this be available in the next version of Postgresql and is there another way > to do this in the current version? But we do support them in the select list. Where does it say that? -- Bruce Momjian | 830 Blythe Avenue maillist@candle.pha.pa.us | Drexel Hill, Pennsylvania 19026 + If your life is a hard drive, | (610) 353-9879(w) + Christ can be your backup. | (610) 853-3000(h)
I'm using this in a an application right now: $result = pg_Exec($conn, "SELECT MAX(pos) FROM demogallery;"); and its been working fine for about 2-3 months... On Wed, 12 Aug 1998, Krasnow, Greg wrote: > In the documentation it mentions that Postgresql does not currently support > MIN() and MAX() in the select list, but only in the where clause... will > this be available in the next version of Postgresql and is there another way > to do this in the current version? > > - Greg > > > Greg Krasnow > HNC Software Inc. > Financial Solutions Group > Senior Software Engineer > Email: gak@hnc.com > Direct Phone: 619.799.8341 > Fax: 619.799.8036 > > > >