1 files changed, 2 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index 405fecb603..ef1eef6b69 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -476,12 +476,12 @@ module ActiveRecord
       # distinct queries, and requires that the ORDER BY include the distinct column.
       # See https://dev.mysql.com/doc/refman/5.7/en/group-by-handling.html
       def columns_for_distinct(columns, orders) # :nodoc:
-        order_columns = orders.reject(&:blank?).map { |s|
+        order_columns = orders.compact_blank.map { |s|
           # Convert Arel node to string
           s = s.to_sql unless s.is_a?(String)
           # Remove any ASC/DESC modifiers
           s.gsub(/\s+(?:ASC|DESC)\b/i, "")
-        }.reject(&:blank?).map.with_index { |column, i| "#{column} AS alias_#{i}" }
+        }.compact_blank.map.with_index { |column, i| "#{column} AS alias_#{i}" }
 
         (order_columns << super).join(", ")
       end