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Further SQL optimizations

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This commit is contained in:
Raphael Michel
2016-11-08 16:58:48 +01:00
parent 4c80ec17bf
commit 37598ed914
8 changed files with 65 additions and 23 deletions
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9
src/pretix/base/models/items.py
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@@ -582,7 +582,7 @@ class Quota(LoggedModel):
Q(redeemed=False) &
Q(Q(valid_until__isnull=True) | Q(valid_until__gte=now_dt)) &
Q(Q(self._position_lookup) | Q(quota=self))
).distinct().count()
).values('id').distinct().count()
def count_in_cart(self, now_dt: datetime=None) -> int:
from pretix.base.models import CartPosition
@@ -595,21 +595,22 @@ class Quota(LoggedModel):
& Q(Q(voucher__valid_until__isnull=True) | Q(voucher__valid_until__gte=now_dt))
) &
self._position_lookup
).distinct().count()
).values('id').distinct().count()
def count_pending_orders(self) -> dict:
from pretix.base.models import Order, OrderPosition
# This query has beeen benchmarked against a Count('id', distinct=True) aggregate and won by a small margin.
return OrderPosition.objects.filter(
self._position_lookup, order__status=Order.STATUS_PENDING,
).distinct().count()
).values('id').distinct().count()
def count_paid_orders(self):
from pretix.base.models import Order, OrderPosition
return OrderPosition.objects.filter(
self._position_lookup, order__status=Order.STATUS_PAID
).distinct().count()
).values('id').distinct().count()
@cached_property
def _position_lookup(self) -> Q: