On Friday, 12 October, 2018 01:02, John Found <johnfo...@asm32.info> wrote:
>Hm, is sounds strange because when HAVING clause is processed, >the aggregate functions should not be processed yet (for a >performance reasons) i.e. the query still has access to all >values from the field >b >and theoretically should be able to search these values the same way >it searches them on executing min() or max() aggregate functions. The WHERE clause filters the table rows going into the GROUP-BY and the HAVING filters results coming out of the GROUP-BY processing, which is why the HAVING clause may only refer to attributes of the grouping ... which is then passed to the ORDER-BY sorter to determine the presentement order. --- The fact that there's a Highway to Hell but only a Stairway to Heaven says a lot about anticipated traffic volume. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
