#27442: count estimation on querysets
-------------------------------------+-------------------------------------
     Reporter:  Denis Cornehl        |                    Owner:  Denis
                                     |  Cornehl
         Type:  New feature          |                   Status:  assigned
    Component:  Database layer       |                  Version:  1.10
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:                       |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Denis Cornehl):

 @Simon thanks for the article, with the method I want to use (explain
 output based) I don't see any big problem there.

 It's an estimation, and will never be exact, and often outdated.

 What would be a valid definition for "reliable enough" we could follow
 here?

 Adding this to all backends is definitely quite some work, since all of
 them have statistics, but I do believe it's not so simple to translate
 them into this count estimation, as it is for postgres

--
Ticket URL: <https://code.djangoproject.com/ticket/27442#comment:3>
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