Re: Unicode combining characters - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject Re: Unicode combining characters
Date
Msg-id 20011002154952Y.t-ishii@sra.co.jp
Whole thread Raw
In response to Re: Unicode combining characters  (Bruce Momjian <pgman@candle.pha.pa.us>)
Responses Re: Unicode combining characters
Re: Unicode combining characters
List pgsql-hackers
> Also, have we decided if multibyte should be the configure default now?

Not sure.

Anyway I have tested LIKE/REGEX query test using current. The query
executed is:

explain analyze select '0000000 5089 474e...( 16475
bytes long text containing only 0-9a-z chars) like 'aaa';

and

explain analyze select '0000000 5089 474e...( 16475
bytes long text containing only 0-9a-z chars) ~ 'aaa';

Here is the result:
no MB        with MB
LIKE    0.09 msec    0.08 msec
REGEX    0.09 msec    0.10 msec

LIKE with MB seemed to be resonably fast, but REGEX with MB seemed a
little bit slow. Probably this is due the wide character conversion
overhead.
--
Tatsuo Ishii


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