Jim C. Nasby wrote: > On Mon, Sep 19, 2005 at 10:16:36PM -0400, Bruce Momjian wrote: > > > > Added to TODO: > > > > * Allow DISTINCT to use hashing like GROUP BY > > 3 lines above we have... > Consider using hash buckets to do DISTINCT, rather than sorting > This would be beneficial when there are few distinct values.
OK, I have merged these items into one. > > Can you add > http://archives.postgresql.org/pgsql-hackers/2005-09/msg00810.php? All I > could find on the other TODO was > http://archives.postgresql.org/pgsql-committers/2004-09/msg00028.php, > which doesn't help much... What do these URL's have that the current TODO does not? * Consider using hash buckets to do DISTINCT, rather than sorting This would be beneficial when there are few distinct values. This is already used by GROUP BY. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org
