Tom Lane <t...@sss.pgh.pa.us> writes: > Yeah, it's conceivable that we could implement something whereby > characters with codes above some cutoff point are handled via runtime > calls to iswalpha() and friends, rather than being included in the > statically-constructed DFA maps. The cutoff point could likely be a lot > less than U+FFFF, too, thereby saving storage and map build time all > round.
It's been proposed to build a “regexp” type in PostgreSQL which would store the DFA directly and provides some way to run that DFA out of its “storage” without recompiling. Would such a mechanism be useful here? Would it be useful only when storing the regexp in a column somewhere then applying it in the query from there (so most probably adding a join or subquery somewhere)? Regards, -- Dimitri Fontaine http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
