Alternatively create a "range" table, insert your defined ranges and join/subquery to the original query.
Create table range (label text, from integer, to integer); -----Ursprüngliche Nachricht----- Von: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] Im Auftrag von Simon Slavin Gesendet: Mittwoch, 08. März 2017 14:53 An: SQLite mailing list <sqlite-users@mailinglists.sqlite.org> Betreff: Re: [sqlite] SQL help: by-range aggregation On 8 Mar 2017, at 1:46pm, Dominique Devienne <ddevie...@gmail.com> wrote: > I'd like to aggregate the sum of the size per-parent, from 1KB, to > each range from low to 8*low (i.e. [low, 8*low)), but w/o having to > write my hand all possible combination, with extra points for > formatting the range bounds in KB, MB, GB as appropriate. Does your programming language allow you to implememnt a SQLite external function which takes a value and returns a string indicating which range its in ? This would allow you to implement triggers on INSERT and UPDATE which automatically set a 'category' field in the table. Then you could filter on value, or use GROUP BY, or other things. Simon. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users ___________________________________________ Gunter Hick Software Engineer Scientific Games International GmbH FN 157284 a, HG Wien Klitschgasse 2-4, A-1130 Vienna, Austria Tel: +43 1 80100 0 E-Mail: h...@scigames.at This communication (including any attachments) is intended for the use of the intended recipient(s) only and may contain information that is confidential, privileged or legally protected. Any unauthorized use or dissemination of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender by return e-mail message and delete all copies of the original communication. Thank you for your cooperation. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
