UNION ALL in Django Orm?

[cde...@predictivescience.com]

I have two different queries on the same model that are in essence like this:

queryset_1 = models.Plan.object.filter(name__startswith='a').annotate(group=Value('Group A', output_field=CharField()))

queryset_2 = models.Plan.object.filter(name__startswith='b').annotate(group=Value('Group B', output_field=CharField()))

and when I try

queryset = queryset_1 | queryset_2

only one of those annotations appears to exist.  All rows returned have group set to "Group A" and when I inspect the sql it turns out that django only "or"-ing the filters.  It send something like:

SELECT plan_plan.*, "Group A" AS "group" FROM plan_plan WHERE ("plan_plan"."name" LIKE 'a%s' OR "plan_plan"."name" LIKE 'b%s');

Is there any way to get a true union instead of an or here?  I'm not particularly interested in using raw sql because in the actual application the filters are dynamic a considerably more complicated.

Thanks in advance,

Cameron Derwin

[Ezequiel Bertti]

Take a look on this project 

https://github.com/Suor/django-union/

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Ezequiel Bertti

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