#22023: .values() followed by defer() or only() results invalid data or crash
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Reporter: jtiai | Owner: nobody
Type: Bug | Status: new
Component: Database layer (models, ORM) | Version: 1.5
Severity: Normal | Keywords: orm
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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Given model
{{{
class MyModel(models.Model):
field_a = models.CharField(max_length=100)
field_b = models.IntegerField()
field_c = models.TextField()
}}}
Query {{{ MyModel.objects.values().only('field_b') }}}
Returns totally incorrect set of fields
Query {{{ MyModel.objects.values().defer('field_b') }}}
Returns all fields but data is shifted starting from field_b
Query {{{ MyModel.objects.values('field_a').only('field_b') }}}
Results a crash due malformed SQL.
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Ticket URL: <https://code.djangoproject.com/ticket/22023>
Django <https://code.djangoproject.com/>
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