[Database, Models] Add indexes to users.username and User.find_by_lower_username utility methods

1 files changed, 8 insertions, 0 deletions

diff --git a/db/migrate/20200907195410_add_index_to_users_username.rb b/db/migrate/20200907195410_add_index_to_users_username.rb
new file mode 100644
index 000000000..06452e0dd
--- /dev/null
+++ b/db/migrate/20200907195410_add_index_to_users_username.rb
@@ -0,0 +1,8 @@
+class AddIndexToUsersUsername < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    add_index :users, :username, unique: true, algorithm: :concurrently
+    add_index :users, 'lower(username)', unique: true, algorithm: :concurrently, name: 'index_on_users_username_lowercase'
+  end
+end