Thursday, February 4, 2010, 7:51:37 PM you wrote: > it is an identifier and is always a number and is used in grouping and > querying. I thought I would lose performance if it is text vs an > integer/double field. Maybe using 'numeric(19)' instead of bigint is an alternative. I actually don't know how these numbers are stored internally (some kind of BCD, or as base-100?), but IMHO they should be faster than strings, although not as fast as 'native' types. -- Jochen Erwied | home: jochen@xxxxxxxxx +49-208-38800-18, FAX: -19 Sauerbruchstr. 17 | work: joe@xxxxxxxxxxxxxxx +49-2151-7294-24, FAX: -50 D-45470 Muelheim | mobile: jochen.erwied@xxxxxxxxxxx +49-173-5404164 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
