On Sun, Jun 27, 2010 at 12:04 PM, Mike Fowler <m...@mlfowler.com> wrote: > Thanks again for your help Robert, turns out the fault was in the pg_proc > entry (the 3 up there should've been a two!). Once I took the grammar out it > was quickly obvious where I'd gone wrong.
Glad it was a helpful suggestion. > Attached is a patch with the revised XMLEXISTS function, complete with > grammar support and regression tests. The implemented grammar is: > > XMLEXISTS ( xpath_expression PASSING BY REF xml_value [BY REF] ) > > Though the full grammar makes everything after the xpath_expression > optional, I've left it has mandatory simply to avoid lots of rework of the > function (would need new null checks, memory handling would need reworking). So if you don't specify the xml_value, what does the xpath_expression get applied to? -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
