I am getting the impression that when I do a django database query
that iterates through all the rows of the table, django stores every
model instance in memory.
For instance, just doing
sumValues = 0
for someModel in SomeModel.objects.all():
sumValues += someModel.value
print sumValues
can eat up gigabytes of memory if the table is large.
But in this example, I don't have any need for the SomeModel instances
that have already been processed once the value has been retrieved. So
this is a huge amount of wasted memory.
Is there any way to make django not behave this way? I.e., when
iterating through a query request, I'd like to be able to tell django
to just retrieve a row at a time from the database, and release the
memory that was used for previously-retrieved rows.
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