wisan watcharinporn wrote:
problem:
how can i configure database that can correct in sorting name and using index scan in like 'xxxx%' search

I think you'll want to read the following then have a quick search of the mailing list archives for "opclass" for some examples.
  http://www.postgresql.org/docs/8.0/static/sql-createindex.html
  http://www.postgresql.org/docs/8.0/static/indexes-opclass.html

HTH
--
  Richard Huxton
  Archonet Ltd

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