Re: Extending Regular Expression bounds limit of 255.

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От Brent DeSpain
Тема Re: Extending Regular Expression bounds limit of 255.
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Msg-id AANLkTimdWeMwyOMtzhsyzaKrCAuYcc2f5qQohHnQXTM6@mail.gmail.com
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Ответ на Re: Extending Regular Expression bounds limit of 255.  (alvherre <alvherre@commandprompt.com>)
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Yep.  That is what I was looking at this morning.  It is probably too late in this release of our project to make this
change.<br/><br />Thanks for the help.<br /><br clear="all" />Brent DeSpain<br />Schweitzer Engineering Laboratories,
Inc.<br/><br /><br /><div class="gmail_quote">On Fri, May 28, 2010 at 9:14 AM, alvherre <span dir="ltr"><<a
href="mailto:alvherre@commandprompt.com">alvherre@commandprompt.com</a>></span>wrote:<br /><blockquote
class="gmail_quote"style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Excerptsfrom Brent DeSpain's message of jue may 27 18:55:55 -0400 2010:<br /><div class="im">> It looks like most of
ourtools are using the Perl version of regular<br /> > expressions with an upper limit of a bound being 32766.  Is
thereany way to<br /> > change this in PG?  Or can I change from POSIX to Perl?<br /><br /></div>See regcomp.c;
you'llhave to recompile.  The interesting constant is<br /> DUPMAX (defined in regguts.h as per POSIX), but note that
there's<br/> arithmetic in repeat() with those values.  I wouldn't recommend doing<br /> any of this unless you have
timeto figure out whether the algorithms<br /> are efficient for larger values though.<br /><font color="#888888"><br
/>--<br /> Álvaro Herrera <<a href="mailto:alvherre@commandprompt.com">alvherre@commandprompt.com</a>><br /> The
PostgreSQLCompany - Command Prompt, Inc.<br /> PostgreSQL Replication, Consulting, Custom Development, 24x7 support<br
/></font></blockquote></div><br/> 

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