1 files changed, 23 insertions, 0 deletions
diff --git a/lib/gitlab/database/pg_class.rb b/lib/gitlab/database/pg_class.rb
new file mode 100644
index 00000000000..0ce9eebc14c
--- /dev/null
+++ b/lib/gitlab/database/pg_class.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Database
+    class PgClass < ActiveRecord::Base
+      self.table_name = 'pg_class'
+
+      def self.for_table(relname)
+        joins("LEFT JOIN pg_stat_user_tables ON pg_stat_user_tables.relid = pg_class.oid")
+          .where('schemaname = current_schema()')
+          .find_by(relname: relname)
+      end
+
+      def cardinality_estimate
+        tuples = reltuples.to_i
+
+        return if tuples < 1
+
+        tuples
+      end
+    end
+  end
+end