Robert James <srobertjames(at)gmail(dot)com> writes:
> On 1/18/13, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Whether that's the explanation is of course impossible to know from
>> the given (lack of) information.
> What information would be helpful to post?
Both forms of the query, EXPLAIN ANALYZE output for both, along with the
underlying table definitions.
regards, tom lane