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;
--
Sam http://samason.me.uk/