re : [HACKERS] Prob with regexp
Hi, There's no bug with regexp, because "*" operator in regex match zero or more times. So if you want match exactly your patern try ~ 'ibd01.*' . "." match an arbitrary character. Cheers, PEJAC Pascal ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
[HACKERS] Prob with regexp
I think there is a prob with regexp, which is comparing one less character as it should. Below is an example. Result is that last character is omitted ! Ph.R. postgres=# select * from pg_database where datname ~ 'ibd01*'; datname | datdba | encoding | datpath -++--+- ibd00_8 |505 |0 | ibd00_8 ibd00_1 |505 |0 | ibd00_1 ibd00_2 |505 |0 | ibd00_2 ibd00_3 |505 |0 | ibd00_3 ibd00_4 |505 |0 | ibd00_4 ibd00_5 |505 |0 | ibd00_5 ibd00_6 |505 |0 | ibd00_6 ibd00_7 |505 |0 | ibd00_7 ibd00_9 |505 |0 | ibd00_9 ibd01_1 |505 |0 | ibd01_1 ibd01_2 |505 |0 | ibd01_2 ibd01_3 |505 |0 | ibd01_3 ibd01_4 |505 |0 | ibd01_4 ibd01_5 |505 |0 | ibd01_5 (14 rows) postgres=# select * from pg_database where datname ~ 'ibd01_*'; datname | datdba | encoding | datpath -++--+- ibd01_1 |505 |0 | ibd01_1 ibd01_2 |505 |0 | ibd01_2 ibd01_3 |505 |0 | ibd01_3 ibd01_4 |505 |0 | ibd01_4 ibd01_5 |505 |0 | ibd01_5 (5 rows) ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
Re: [HACKERS] Prob with regexp
Philippe Rochat [EMAIL PROTECTED] writes: I think there is a prob with regexp, which is comparing one less character as it should. Below is an example. Result is that last character is omitted ! Possibly there is a problem with your understanding of regexp patterns ... but all those matches look valid to me. See http://www.postgresql.org/devel-corner/docs/postgres/functions-matching.html for more info. regards, tom lane ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl
Re: [HACKERS] Prob with regexp
Philippe Rochat writes: I think there is a prob with regexp, which is comparing one less character as it should. Below is an example. Result is that last character is omitted ! A '*' means "zero or more of the preceeding character". You probably want a '+'. Ph.R. postgres=# select * from pg_database where datname ~ 'ibd01*'; datname | datdba | encoding | datpath -++--+- ibd00_8 |505 |0 | ibd00_8 ibd00_1 |505 |0 | ibd00_1 ibd00_2 |505 |0 | ibd00_2 ibd00_3 |505 |0 | ibd00_3 ibd00_4 |505 |0 | ibd00_4 ibd00_5 |505 |0 | ibd00_5 ibd00_6 |505 |0 | ibd00_6 ibd00_7 |505 |0 | ibd00_7 ibd00_9 |505 |0 | ibd00_9 ibd01_1 |505 |0 | ibd01_1 ibd01_2 |505 |0 | ibd01_2 ibd01_3 |505 |0 | ibd01_3 ibd01_4 |505 |0 | ibd01_4 ibd01_5 |505 |0 | ibd01_5 (14 rows) postgres=# select * from pg_database where datname ~ 'ibd01_*'; datname | datdba | encoding | datpath -++--+- ibd01_1 |505 |0 | ibd01_1 ibd01_2 |505 |0 | ibd01_2 ibd01_3 |505 |0 | ibd01_3 ibd01_4 |505 |0 | ibd01_4 ibd01_5 |505 |0 | ibd01_5 (5 rows) -- Peter Eisentraut [EMAIL PROTECTED] http://yi.org/peter-e/ ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
