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Reduce number of redundant SQL queries

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Raphael Michel
2016-11-06 19:59:19 +01:00
parent 5aa3ff0616
commit 7b48a17b51
9 changed files with 161 additions and 145 deletions
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99
src/pretix/base/services/stats.py
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@@ -28,48 +28,51 @@ def tuplesum(tuples: Iterable[Tuple]) -> Tuple:
return tuple(map(mysum, zip(*list(tuples))))
def dictsum(*dicts) -> dict:
res = {}
keys = set()
for d in dicts:
keys |= set(d.keys())
for k in keys:
res[k] = (sum(d[k][0] for d in dicts if k in d), sum(d[k][1] for d in dicts if k in d))
return res
def order_overview(event: Event) -> Tuple[List[Tuple[ItemCategory, List[Item]]], Dict[str, Tuple[Decimal, Decimal]]]:
items = event.items.all().select_related(
'category', # for re-grouping
).prefetch_related(
'variations'
).order_by('category__position', 'category_id', 'name')
num_total = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in (OrderPosition.objects
.filter(order__event=event,
order__status__in=[Order.STATUS_PENDING, Order.STATUS_EXPIRED, Order.STATUS_PAID])
.values('item', 'variation')
.annotate(cnt=Count('id'), price=Sum('price')).order_by())
}
counters = OrderPosition.objects.filter(
order__event=event
).values(
'item', 'variation', 'order__status'
).annotate(cnt=Count('id'), price=Sum('price')).order_by()
num_canceled = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in (OrderPosition.objects
.filter(order__event=event, order__status=Order.STATUS_CANCELED)
.values('item', 'variation')
.annotate(cnt=Count('id'), price=Sum('price')).order_by())
for p in counters if p['order__status'] == Order.STATUS_CANCELED
}
num_refunded = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in (OrderPosition.objects
.filter(order__event=event, order__status=Order.STATUS_REFUNDED)
.values('item', 'variation')
.annotate(cnt=Count('id'), price=Sum('price')).order_by())
}
num_pending = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in (OrderPosition.objects
.filter(order__event=event,
order__status__in=(Order.STATUS_PENDING, Order.STATUS_EXPIRED))
.values('item', 'variation')
.annotate(cnt=Count('id'), price=Sum('price')).order_by())
for p in counters if p['order__status'] == Order.STATUS_REFUNDED
}
num_paid = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in (OrderPosition.objects
.filter(order__event=event, order__status=Order.STATUS_PAID)
.values('item', 'variation')
.annotate(cnt=Count('id'), price=Sum('price')).order_by())
for p in counters if p['order__status'] == Order.STATUS_PAID
}
num_s_pending = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in counters if p['order__status'] == Order.STATUS_PENDING
}
num_expired = {
(p['item'], p['variation']): (p['cnt'], p['price'])
for p in counters if p['order__status'] == Order.STATUS_EXPIRED
}
num_pending = dictsum(num_s_pending, num_expired)
num_total = dictsum(num_pending, num_paid)
for item in items:
item.all_variations = list(item.variations.all())
@@ -120,41 +123,33 @@ def order_overview(event: Event) -> Tuple[List[Tuple[ItemCategory, List[Item]]],
payment_cat_obj = DummyObject()
payment_cat_obj.name = _('Payment method fees')
payment_items = []
num_total = {
o['payment_provider']: (o['cnt'], o['payment_fee'])
for o in (Order.objects
.filter(event=event)
.values('payment_provider')
.annotate(cnt=Count('id'), payment_fee=Sum('payment_fee')).order_by())
}
counters = event.orders.values('payment_provider', 'status').annotate(
cnt=Count('id'), payment_fee=Sum('payment_fee')
).order_by()
num_canceled = {
o['payment_provider']: (o['cnt'], o['payment_fee'])
for o in (Order.objects
.filter(event=event, status=Order.STATUS_CANCELED)
.values('payment_provider')
.annotate(cnt=Count('id'), payment_fee=Sum('payment_fee')).order_by())
for o in counters if o['status'] == Order.STATUS_CANCELED
}
num_refunded = {
o['payment_provider']: (o['cnt'], o['payment_fee'])
for o in (Order.objects
.filter(event=event, status=Order.STATUS_REFUNDED)
.values('payment_provider')
.annotate(cnt=Count('id'), payment_fee=Sum('payment_fee')).order_by())
for o in counters if o['status'] == Order.STATUS_REFUNDED
}
num_pending = {
num_s_pending = {
o['payment_provider']: (o['cnt'], o['payment_fee'])
for o in (Order.objects
.filter(event=event, status__in=(Order.STATUS_PENDING, Order.STATUS_EXPIRED))
.values('payment_provider')
.annotate(cnt=Count('id'), payment_fee=Sum('payment_fee')).order_by())
for o in counters if o['status'] == Order.STATUS_PENDING
}
num_expired = {
o['payment_provider']: (o['cnt'], o['payment_fee'])
for o in counters if o['status'] == Order.STATUS_EXPIRED
}
num_paid = {
o['payment_provider']: (o['cnt'], o['payment_fee'])
for o in (Order.objects
.filter(event=event, status=Order.STATUS_PAID)
.values('payment_provider')
.annotate(cnt=Count('id'), payment_fee=Sum('payment_fee')).order_by())
for o in counters if o['status'] == Order.STATUS_PAID
}
num_pending = dictsum(num_s_pending, num_expired)
num_total = dictsum(num_pending, num_paid)
provider_names = {}
responses = register_payment_providers.send(event)