Sam Mason wrote:
On Sun, Jul 12, 2009 at 09:49:15PM +0100, Roy Walter wrote:
Where exactly does that fit in terms of my original query, i.e.:
SELECT x FROM (SELECT xpath('//entry[contains(p, ''searchtext'')]/@*', docxml) AS x FROM docs) AS y WHERE x <> [test for empty array?????????]
Something like the following should do the right thing:
SELECT x FROM ( SELECT xpath('//entry[contains(p, ''searchtext'')]/@*', docxml) AS x FROM docs) AS y WHERE array_upper(x, 1) > 0;
Thank you, works just fine. I thought it was more complicated than that :-)
-- Roy