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Refs #10060 -- Corrected description of multiple annotations bug.

Tim Graham 9 years ago
parent
commit
3d2236773b
1 changed files with 4 additions and 5 deletions
  1. 4 5
      docs/topics/db/aggregation.txt

+ 4 - 5
docs/topics/db/aggregation.txt

@@ -190,9 +190,8 @@ Combining multiple aggregations
 -------------------------------
 
 Combining multiple aggregations with ``annotate()`` will `yield the wrong
-results <https://code.djangoproject.com/ticket/10060>`_, as multiple tables are
-cross joined. Due to the use of ``LEFT OUTER JOIN``, duplicate records will be
-generated if some of the joined tables contain more records than the others:
+results <https://code.djangoproject.com/ticket/10060>`_ because joins are used
+instead of subqueries:
 
     >>> Book.objects.first().authors.count()
     2
@@ -374,8 +373,8 @@ Both queries return a list of publishers that have at least one book with a
 rating exceeding 3.0, hence publisher C is excluded.
 
 In the first query, the annotation precedes the filter, so the filter has no
-effect on the annotation. ``distinct=True`` is required to avoid a
-:ref:`cross-join bug <combining-multiple-aggregations>`.
+effect on the annotation. ``distinct=True`` is required to avoid a :ref:`query
+bug <combining-multiple-aggregations>`.
 
 The second query counts the number of books that have a rating exceeding 3.0
 for each publisher. The filter precedes the annotation, so the filter