On 9 Jan 2018, at 9:50am, Eric Grange <zar...@gmail.com> wrote: > then I fill that table with something like > > INSERT INTO RANKED > SELECT key, value > FROM ...something rather complex and big... > ORDER BY value desc > > This works well enough, but as the amount of values to be ranked increases, > this feels wasteful to delete everything and then re-insert > everything just to adjust the RANK column, also I am running into memory > issues as the ORDER BY requires a temporary b-tree > which runs into the gigabyte range in some instances.
The ORDER BY clause serves no useful value here. Leave it out. Do your sorting when you query the table. Simon. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
