python - Sum same column in different ways depending on other column - Django ORM -

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i have following table assignment structure:

| employee | product | process | qty | | swati    | prod1   | issue   |  60 | | rohit    | prod1   | issue   |  30 | | rohit    | prod2   | issue   |  40 | | swati    | prod1   | receive |  40 | | swati    | prod2   | issue   |  70 |

i want final table each employee (say employee = 'swati'):

| product | sum_issued | sum_received | prod1   |         60 |           40 | | prod2   |         70 |            0 |

the sql query is:

select product      , sum(case when process='issue' qty else 0 end) sum_issued      , sum(case when process='receive' qty else 0 end) sum_received    assignment   employee = 'swati'   group      product;

what should django query be, corresponding result?

i guess model name 'assignment'. can use below query

from django.db.models import case, value, when, sum, integerfield, count  result = assignment.objects.filter(employee="swati").values('product').annotate(     sum_issued=sum(         case(when(process='issue', then='qty'), default=value(0), output_field=integerfield())),     sum_recived=sum(case(when(process='receive', then='qty'), default=value(0), output_field=integerfield()))     )

if print above query print result.query , result is,

select "product", sum(case when "process" = issue "qty" else 0 end) "sum_issued", sum(case when "process" = receive "qty" else 0 end) "sum_recived" "assignment" "employee" = 'swati' group "product"

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