Re: create index on function - why?
От | Philip Warner |
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Тема | Re: create index on function - why? |
Дата | |
Msg-id | 5.1.0.14.0.20021222211601.04f26150@mail.rhyme.com.au обсуждение исходный текст |
Ответ на | Re: create index on function - why? (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-sql |
At 11:46 AM 15/02/2002 -0500, Tom Lane wrote: >A functional index is sort of like a hidden, precomputed column added to >your table. One of the things I keep running into is the desire for a mixed functional/data index. I know the workaround is to build a function that combines all fields, but would it be hard to allow mixed indexes: create table users(id integer, last_name text); create index users_id_name on users(id,lower(name)); ? ---------------------------------------------------------------- Philip Warner | __---_____ Albatross Consulting Pty. Ltd. |----/ - \ (A.B.N. 75 008 659 498) | /(@) ______---_ Tel: (+61) 0500 83 82 81 | _________ \ Fax: (+61) 03 5330 3172 | ___________ | Http://www.rhyme.com.au | / \| | --________-- PGP key available upon request, | / and from pgp5.ai.mit.edu:11371 |/
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