#29850: Add window support for RowRange frames -------------------------------------+------------------------------------- Reporter: Daniel Fuchs | Owner: Bryan | Collazo Type: New feature | Status: assigned Component: Database layer | Version: master (models, ORM) | Severity: Normal | Resolution: Keywords: | Triage Stage: Accepted Has patch: 0 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 -------------------------------------+------------------------------------- Changes (by felixxm):
* version: 2.1 => master Old description: > The current RowRange frame is missing handling for several cases. > > None of the following are currently supported: > RowRange(start=-2, end=-1) > ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING > RowRange(start=1, end=2) > ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING > > It's also missing support for EXCLUDE. > ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING EXCLUDE CURRENT ROW New description: The current RowRange frame is missing handling for several cases. None of the following are currently supported: RowRange(start=-2, end=-1) ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING RowRange(start=1, end=2) ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING It's also missing support for EXCLUDE. ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING EXCLUDE CURRENT ROW ---- Frame exclusion is supported only in [https://www.postgresql.org/docs/11 /sql-expressions.html#SYNTAX-WINDOW-FUNCTIONS PostgreSQL 11+], other databases do not support exclusion (see [https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf /Analytic-Functions.html#GUID-527832F7-63C0-4445-8C16-307FA5084056 Oracle 18c doc], [https://mariadb.com/kb/en/library/window-functions-overview/ MariaDB doc], and [https://dev.mysql.com/doc/refman/8.0/en/window- functions-frames.html MySQL doc]). -- -- Ticket URL: <https://code.djangoproject.com/ticket/29850#comment:3> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/065.338828f9b9b324823f4e472296ede718%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.