Re: Undocumented(?) limits on regexp functions - Mailing list pgsql-hackers

From Andrew Gierth
Subject Re: Undocumented(?) limits on regexp functions
Date
Msg-id 87zhxp3xer.fsf@news-spur.riddles.org.uk
Whole thread Raw
In response to Re: Undocumented(?) limits on regexp functions  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Undocumented(?) limits on regexp functions
Re: Undocumented(?) limits on regexp functions
List pgsql-hackers
>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:

 >> Should these limits:

 >> a) be removed

 Tom> Doubt it --- we could use the "huge" request variants, maybe, but
 Tom> I wonder whether the engine could run fast enough that you'd want
 Tom> to.

I do wonder (albeit without evidence) whether the quadratic slowdown
problem I posted a patch for earlier was ignored for so long because
people just went "meh, regexps are slow" rather than wondering why a
trivial splitting of a 40kbyte string was taking more than a second.

-- 
Andrew (irc:RhodiumToad)


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