“Too many SQL variables” error in django with sqlite3

Question

I\'m getting this error using sqlite3 in django:

Exception Value: too many SQL variables

And I think the answer to it is this, from

Answer 1

I had a similar problem, but when deleting just single row that had a large number of related rows in another table. Django was calling a cascading delete causing the problem, but since my code was only calling a single object delete, the solutions described in other answers could not be applied (unless I modified the Django library code, which I didn't want to do).

My solution was to first delete the related objects via raw sql query, then use the normal Django delete() on the parent object, all wrapped in a transaction.

Before:

object.delete() # Django tries to delete a large number of related object and fails

After:

from django.db import connection

Class MyObject:
    def delete_related(self):
        cur = connection.cursor()
        sql = 'delete from my_table where ...'
        cur.execute(sql, params)

...

with transaction.atomic():
    object.delete_related() # so that Django won't try (and fail) on its own
    object.delete()