On Fri, Dec 12, 2003 at 10:13:56AM -0800, David Fetter wrote:
> I'm looking to the SQL WITH clause as a way to get better regex
> support in PostgreSQL. I've been chatting a little bit about this,
> and here's an idea for a behavior. Implementation details TBD.
I think you could be rather looking at keeping the regmatch_t * from
RE_compile_and_execute somewhere in the TopTransactionContext, and
create accessor functions to it. You could do
BEGIN;
SELECT ... x ~ '([0-9]+)x([0-9]+)';
SELECT regex_parens(1), regex_parens(2);
COMMIT;
Etc, you get the idea. Of course you could only access the captured
expressions from the last regex, and only within the same transaction
block.
--
Alvaro Herrera (<alvherre[@]dcc.uchile.cl>)
Maybe there's lots of data loss but the records of data loss are also lost.
(Lincoln Yeoh)
