Re: Extending Regular Expression bounds limit of 255.
От | alvherre |
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Тема | Re: Extending Regular Expression bounds limit of 255. |
Дата | |
Msg-id | 1275059495-sup-4074@alvh.no-ip.org обсуждение исходный текст |
Ответ на | Re: Extending Regular Expression bounds limit of 255. (Brent DeSpain <bd.postgres@gmail.com>) |
Ответы |
Re: Extending Regular Expression bounds limit of 255.
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Список | pgsql-sql |
Excerpts from Brent DeSpain's message of jue may 27 18:55:55 -0400 2010: > It looks like most of our tools are using the Perl version of regular > expressions with an upper limit of a bound being 32766. Is there any way to > change this in PG? Or can I change from POSIX to Perl? See regcomp.c; you'll have to recompile. The interesting constant is DUPMAX (defined in regguts.h as per POSIX), but note that there's arithmetic in repeat() with those values. I wouldn't recommend doing any of this unless you have time to figure out whether the algorithms are efficient for larger values though. -- Álvaro Herrera <alvherre@commandprompt.com> The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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