#29067: QuerySet.values_list(..., flat=True) combined with .annotate() 
incorrectly
includes the annotate columns
-------------------------------------+-------------------------------------
               Reporter:  Jon        |          Owner:  nobody
  Dufresne                           |
                   Type:  Bug        |         Status:  new
              Component:  Database   |        Version:  2.0
  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          |
-------------------------------------+-------------------------------------
 Regression introduced in Django 2.0.

 In `FlatValuesListIterable.__iter__()`, can't assume the returned rows
 have a single column as using `.annotate()` may have added additional
 columns to the `SELECT`.

 Introduction bisected to commit 4dfd6b88d520b43b6363946e5ee58ba14cd1efe6.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/29067>
Django <https://code.djangoproject.com/>
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