AW: pg_index.indislossy
От | Zeugswetter Andreas SB |
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Тема | AW: pg_index.indislossy |
Дата | |
Msg-id | 11C1E6749A55D411A9670001FA6879633682C6@sdexcsrv1.f000.d0188.sd.spardat.at обсуждение исходный текст |
Список | pgsql-hackers |
> > Let's avoid removing things for the sake of removing them ... might be an > > old idea that, if someone takes the time to research, might prove useful > > ... > > Yea, there is actually some code attached to this vs. the others that > had no code at all. Are we ever going to do partial indexes? I guess > that is the question. The idea is very very good, and since there is an exaple implementation in pg 4 it should probably be possible to reimplement. (DB2 has this feature also) In real life, you would e.g. index a status column for rows, that need more work. create index deposit_status_index on deposit (status) where status <> 0; 99% of your rows would have status = 0 thus the index would be extremely efficient for all select statements that search for a specific status other than 0. Imho it would be a shame to give up that idea so easily. Andreas
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