On 12-09-15 22:12, Aurel Wisse wrote: > @Luuk : I tried your query and I cancelled after 9 minutes when it wasn't > finished. > yes, it was/IS bad...
i should stick to non-recursive queries select s1.calc_date, (select min(s2.calc_date) from securities s2 where s2.calc_date>s1.calc_date) from securities s1 order by s1.calc_date;