#27442: count estimation on querysets
-------------------------------------+-------------------------------------
Reporter: Denis | Owner: Denis Cornehl
Cornehl |
Type: New | Status: assigned
feature |
Component: Database | Version: 1.10
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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on bigger tables a normal ``count()`` gets slow quickly, though quite
often we only need a rough estimation (for pagination for example, see
#26451 ).
I want to add a new ``estimate_count`` method on QuerySets to allow users
to access this count estimation.
For Postgres and other databases this is possible by using the query
planner statistics to do this estimation.
--
Ticket URL: <https://code.djangoproject.com/ticket/27442>
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