#24744: hstore lookup fails inside subquery
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     Reporter:  mrAdm             |                    Owner:
         Type:  Bug               |                   Status:  new
    Component:  contrib.postgres  |                  Version:  1.8
     Severity:  Release blocker   |               Resolution:
     Keywords:  hstore            |             Triage Stage:  Accepted
    Has patch:  0                 |      Needs documentation:  0
  Needs tests:  0                 |  Patch needs improvement:  0
Easy pickings:  0                 |                    UI/UX:  0
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Comment (by mjtamlyn):

 I would love a better list of all the things we should have (and generally
 a much more accurate set of lookup/transform/expression to field
 mappings). A possible answer would be to have a TestCase mixin with many
 `test_foo` methods raising `NotImplementedError`. We may also want a
 metaclass though to be able to explicitly remove `test_bar` where the
 feature `bar` does not apply, rather than skipping it. This would have the
 advantage that when you add a test to the base mixin for a new generic
 lookup/expression/whatever then it gets tested on all field types, and you
 see the ones it fails on (and on which dbs).

 AFAIK there are not `relabeled_clone` methods in `contrib.postgres` at
 present, so any `Transform` therein which takes args is potentially
 suspect.

--
Ticket URL: <https://code.djangoproject.com/ticket/24744#comment:4>
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