Rob Sargent <robjsargent(at)gmail(dot)com> writes:
> When using pipe separated xpath statements to fill multiple columns of
> output, there is no guarantee of correlation among the columns of the
> rows returned.
Yeah, this is a known problem mentioned in our TODO list. Nobody has
any idea how to persuade libxml to do that, and the general opinion
seems to be that we shouldn't have designed xpath_table that way in the
first place ...
regards, tom lane