Re: "like" and index

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От Tom Lane
Тема Re: "like" and index
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Msg-id 7549.1235608285@sss.pgh.pa.us
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Ответ на Re: "like" and index  ("Daniel J. Summers" <daniel@djs-consulting.com>)
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"Daniel J. Summers" <daniel@djs-consulting.com> writes:
> MySQL will only use it if the wildcard isn't in the front (1) and
> requires the MATCH keyword to search full-text indexes (2), Oracle
> requires special "full-text" indexes to be able to use for LIKE (3)
> (actually dealt with that at work a few months back), SQL Server only
> uses it under certain conditions (4), and even PostgreSQL (the great
> subject of this mailing list) doesn't do it with a standard index (5) -
> you've got to use a special operator class.

Only if you're using a non-C locale.

            regards, tom lane

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