Fix slow distinct queries where grouped queries are faster (#15287)

About 2x speed-up on inboxes query

2 files changed, 2 insertions, 2 deletions

diff --git a/app/models/account.rb b/app/models/account.rb
index f794d8a29..ed11a514d 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -443,7 +443,7 @@ class Account < ApplicationRecord
     end
 
     def inboxes
-      urls = reorder(nil).where(protocol: :activitypub).pluck(Arel.sql("distinct coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url)"))
+      urls = reorder(nil).where(protocol: :activitypub).group(:preferred_inbox_url).pluck(Arel.sql("coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url) AS preferred_inbox_url"))
       DeliveryFailureTracker.without_unavailable(urls)
     end
 
diff --git a/app/models/form/account_batch.rb b/app/models/form/account_batch.rb
index 882770d7c..26d6d3abf 100644
--- a/app/models/form/account_batch.rb
+++ b/app/models/form/account_batch.rb
@@ -51,7 +51,7 @@ class Form::AccountBatch
   end
 
   def account_domains
-    accounts.pluck(Arel.sql('distinct domain')).compact
+    accounts.group(:domain).pluck(:domain).compact
   end
 
   def accounts