Re: Behavior of a pg_trgm index for 2 (or < 3) character LIKE queries

following emails are discussed about partial match of pg_trgm.  I hope

will this help.
<http://www.postgresql.org/message-id/CAHGQGwFJshvV2nGME19wdTW9teFw_w7h2ns4E+YYsjkB9WdWDQ@mail.gmail.com>
as you may know, if search string contains multibyte characters
trigram key is converted to CRC of 4 byte and it is used as key.
(but only use upper 3 byte from CRC)
so we can do partial matching if KEEPONLYALNUM is enabled.