Raw Queries with backends that don't support chunked reads aren't done correctly
|Reported by:||Alex Gaynor||Owned by:||nobody|
|Component:||Database layer (models, ORM)||Version:||master|
|Has patch:||yes||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
If a backend doesn't support chunked reads the cursor should be exhausted immediately. This leads to bugs in PyPy, and probably other non-cpython systems.