David Johnston wrote > > Janek Sendrowski wrote >> Hi, >> >> >> >> thanks for all your answers. >> >> I'll have a try with the contains operator and the intrange, but >> before I'd like to know if this would work: >> >> >> >> CASE WHEN a >= 0 AND a < 25 >> >> CASE WHEN a >= 25 AND a < 50 >> >> >> >> There wouldn't be a double endpoint. I just have to decide which >> range the endpoint includes. >> >> >> >> Janek Sendrowski > Yes, using explicit comparison operators with "AND" will work just fine; > its just a little more verbose so the other options, if available, are > preferred from a readability standpoint. I do not know whether the > different options may have different performance characteristics. > > David J. And just for completeness: WITH range_def (low, high, label) AS ( VALUES (0, 25, '0 to 25'::varchar), (25, 50, '25 to 50') ) SELECT ... FROM source_data JOIN range_def ON (val >= low AND val < high) [the rest of the query] David J. -- View this message in context: http://postgresql.1045698.n5.nabble.com/how-to-use-aggregate-functions-in-this-case-tp5768522p5768721.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
