1 files changed, 12 insertions, 0 deletions
diff --git a/activerecord/lib/arel/visitors/postgresql.rb b/activerecord/lib/arel/visitors/postgresql.rb
index c5110fa89c..920776b4dc 100644
--- a/activerecord/lib/arel/visitors/postgresql.rb
+++ b/activerecord/lib/arel/visitors/postgresql.rb
@@ -77,6 +77,18 @@ module Arel # :nodoc: all
           grouping_parentheses o, collector
         end
 
+        def visit_Arel_Nodes_IsNotDistinctFrom(o, collector)
+          collector = visit o.left, collector
+          collector << " IS NOT DISTINCT FROM "
+          visit o.right, collector
+        end
+
+        def visit_Arel_Nodes_IsDistinctFrom(o, collector)
+          collector = visit o.left, collector
+          collector << " IS DISTINCT FROM "
+          visit o.right, collector
+        end
+
         # Used by Lateral visitor to enclose select queries in parentheses
         def grouping_parentheses(o, collector)
           if o.expr.is_a? Nodes::SelectStatement