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I’m using PostgreSQL 9.1, I thought it was supposed to support this XML integration but I can’t get it to work. I try this query:
select data from ddm_table_data order by pgxml_xpath(data, '//xmltest/col1/text()', '', '');
And it comes up with the following errors:
ERROR: function pgxml_xpath(xml, unknown, unknown, unknown) does not exist
SQL state: 42883
Hint: No function matches the given name and argument types. You might need to add explicit type casts.
Am I missing something?
Like the error says – there’s no such function. There’s one called “xpath” though.
The manuals are your friend.