Re: is it possible to get the optimizer to use indexes

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От Christopher Kings-Lynne
Тема Re: is it possible to get the optimizer to use indexes
Дата
Msg-id 3FE256AA.8000707@familyhealth.com.au
обсуждение исходный текст
Ответ на is it possible to get the optimizer to use indexes with a like clause  (Dave Cramer <pg@fastcrypt.com>)
Ответы Re: is it possible to get the optimizer to use indexes
Список pgsql-performance
Дерево обсуждения 
> It appears that the optimizer only uses indexes for = clause?

The optimizer will used indexes for LIKE clauses, so long as the clause
is a prefix search, eg:

SELECT * FROM test WHERE a LIKE 'prf%';

Chris

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