2009/6/14 hubert depesz lubaczewski <dep...@depesz.com>: > On Sun, Jun 14, 2009 at 08:15:55AM +0200, Pavel Stehule wrote: >> postgres=# select '10' ~ '[0..9]+$'; >> ?column? >> ---------- >> t >> (1 row) > > regexp '[0..9]+$' tests is given strings containst at the end substring > containing only characters "0", "9" and ".". > and yes, it does - the last character is 0, so it matches. > >> postgres=# select '10' ~ '^[0..9]+$'; >> ?column? >> ---------- >> f >> (1 row) > > this regexp checks if whole string is built only with characters "0", > "9", and ".". and it is not - the first character is "1" which is not > the character list you provided. > > basically ".." has no special meaning in regexps, especially within [] - > i.e. it is just a dot. >
my mistake thank you Pavel > Best regards, > > depesz > > -- > Linkedin: http://www.linkedin.com/in/depesz / blog: http://www.depesz.com/ > jid/gtalk: dep...@depesz.com / aim:depeszhdl / skype:depesz_hdl / gg:6749007 > -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
