#32632: Query resolution can be at least 3x slower in 3.2 -------------------------------------+------------------------------------- Reporter: Phillip Cutter | Owner: Simon | Charette Type: Bug | Status: closed Component: Database layer | Version: 3.2 (models, ORM) | Severity: Release blocker | Resolution: fixed Keywords: | Triage Stage: Ready for | checkin Has patch: 1 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 -------------------------------------+-------------------------------------
Comment (by Mariusz Felisiak <felisiak.mariusz@…>): In [changeset:"d5add5d3a26f98e961dfbcad67bb04d936f2f332" d5add5d3]: {{{ #!CommitTicketReference repository="" revision="d5add5d3a26f98e961dfbcad67bb04d936f2f332" [3.2.x] Fixed #32632, Fixed #32657 -- Removed flawed support for Subquery deconstruction. Subquery deconstruction support required implementing complex and expensive equality rules for sql.Query objects for little benefit as the latter cannot themselves be made deconstructible to their reference to model classes. Making Expression @deconstructible and not BaseExpression allows interested parties to conform to the "expression" API even if they are not deconstructible as it's only a requirement for expressions allowed in Model fields and meta options (e.g. constraints, indexes). Thanks Phillip Cutter for the report. This also fixes a performance regression in bbf141bcdc31f1324048af9233583a523ac54c94. Backport of c8b659430556dca0b2fe27cf2ea0f8290dbafecd from main }}} -- Ticket URL: <https://code.djangoproject.com/ticket/32632#comment:10> 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 view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/065.2c06ebe791e8961ff8596c986a56dec9%40djangoproject.com.