On Fri, Feb 14, 2014 at 9:20 PM, Antoine Pitrou <solip...@pitrou.net> wrote: > Hmm, it seems you're right, but I'm quite sure some DBMSes have a > consistent way of ordering NULLs when using ORDER BY on a nullable > column.
Yes, and I believe it's part of the SQL-92 spec. Certainly here's PostgreSQL's take on the matter: http://www.postgresql.org/docs/9.3/static/sql-select.html#SQL-ORDERBY In short, NULL is by default considered greater than anything else (last in an ascending sort, first in a descending sort), but this can be inverted. Oddly enough, the syntax is NULLS FIRST vs NULLS LAST, not NULLS LOW vs NULLS HIGH. ChrisA _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
