| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Chris Hoover" <revoohc(at)gmail(dot)com> |
| Cc: | "pgsql-admin(at)postgresql(dot)org Admin" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: any way to make query use index? |
| Date: | 2007-11-15 16:52:05 |
| Message-ID: | 4199.1195145525@sss.pgh.pa.us |
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| Lists: | pgsql-admin |
"Chris Hoover" <revoohc(at)gmail(dot)com> writes:
> On Nov 15, 2007 11:25 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> If changing the queries seems impractical, you could add an index on
>> rev_code::text, or reconsider the choice of column type.
> how would you create this index? create index rev_code_text_idx on
> rev_code_desc(rev_code::text) fails complaining "ERROR: syntax error
> at or near "::""
You need more parentheses --- read the docs about expression indexes.
regards, tom lane
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