Added some database indices

src/pretix/base/models/log.py

@@ -23,9 +23,9 @@ class LogEntry(models.Model):
     :type data: str
     """
     content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
-    object_id = models.PositiveIntegerField()
+    object_id = models.PositiveIntegerField(db_index=True)
     content_object = GenericForeignKey('content_type', 'object_id')
-    datetime = models.DateTimeField(auto_now_add=True)
+    datetime = models.DateTimeField(auto_now_add=True, db_index=True)
     user = models.ForeignKey('User', null=True, blank=True, on_delete=models.PROTECT)
     event = models.ForeignKey('Event', null=True, blank=True, on_delete=models.CASCADE)
     action_type = models.CharField(max_length=255)

src/pretix/base/models/orders.py

@@ -90,12 +90,14 @@ class Order(LoggedModel):
 
     code = models.CharField(
         max_length=16,
-        verbose_name=_("Order code")
+        verbose_name=_("Order code"),
+        db_index=True
     )
     status = models.CharField(
         max_length=3,
         choices=STATUS_CHOICE,
-        verbose_name=_("Status")
+        verbose_name=_("Status"),
+        db_index=True
     )
     event = models.ForeignKey(
         Event,
@@ -426,7 +428,7 @@ class OrderPosition(AbstractPosition):
         max_digits=10, decimal_places=2,
         verbose_name=_('Tax value')
     )
-    secret = models.CharField(max_length=64, default=generate_position_secret)
+    secret = models.CharField(max_length=64, default=generate_position_secret, db_index=True)
 
     class Meta:
         verbose_name = _("Order position")

src/pretix/base/models/vouchers.py

@@ -56,7 +56,8 @@ class Voucher(LoggedModel):
     )
     code = models.CharField(
         verbose_name=_("Voucher code"),
-        max_length=255, default=generate_code
+        max_length=255, default=generate_code,
+        db_index=True,
     )
     redeemed = models.BooleanField(
         verbose_name=_("Redeemed"),
@@ -114,6 +115,7 @@ class Voucher(LoggedModel):
         max_length=255,
         verbose_name=_("Tag"),
         blank=True,
+        db_index=True,
         help_text=_("You can use this field to group multiple vouchers together. If you enter the same value for "
                     "multiple vouchers, you can get statistics on how many of them have been redeemed etc.")
     )