| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: ANALYZE versus expression indexes with nondefault opckeytype |
| Date: | 2010-08-01 15:54:33 |
| Message-ID: | 16565.1280678073@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Sat, Jul 31, 2010 at 11:15 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> I don't think this can be claimed to be a corner case. If you set up
>> an FTS index according to the first alternative offered in
>>
>> http://developer.postgresql.org/pgdocs/postgres/textsearch-tables.html#TEXTSEARCH-TABLES-INDEX
>>
>> you will find that the system fails to collect stats for it and so you
>> get stupid default estimates for your FTS queries.
> Yeah, maybe you're right. But I'd still prefer to see us break the
> ABI and do this just in 9.0 rather than changing 8.4.
OK, I can live with that. I'll take a look at it shortly.
regards, tom lane
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