Re: *sigh*
От | Randolf Richardson |
---|---|
Тема | Re: *sigh* |
Дата | |
Msg-id | Xns944F753D7F3C5rr8xca@200.46.204.72 обсуждение исходный текст |
Ответ на | *sigh* (Thomas Zehetbauer <thomasz@hostmaster.org>) |
Ответы |
COPY TABLE TO
Re: *sigh* |
Список | pgsql-hackers |
"markir@paradise.net.nz (Mark Kirkwood)" wrote in comp.databases.postgresql.hackers: [sNip] > How about: > > Implement a function "estimated_count" that can be used instead of > "count". It could use something like the algorithm in > src/backend/commands/analyze.c to get a reasonably accurate psuedo count > quickly. > > The advantage of this approach is that "count" still means (exact)count > (for your xact snapshot anyway). Then the situation becomes: > > Want a fast count? - use estimated_count(*) > Want an exact count - use count(*) I think this is an excellent solution. -- Randolf Richardson - rr@8x.ca Vancouver, British Columbia, Canada Please do not eMail me directly when responding to my postings in the newsgroups.
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