Oliver Elphick <[email protected]> writes:
> I tried to do this:
> SELECT p.company, p.start, p.yearend, p.idnum,
> s.pdno, s.pdend,
> CASE WHEN nth_value(s.pdend,(row_number() OVER w)::INTEGER -1)
> OVER w IS NULL
> THEN p.start
> ELSE nth_value(s.pdend,(row_number() OVER w)::INTEGER -1) +
> '1 day'::INTERVAL
Um, don't you just want lead() or lag()?
regards, tom lane
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