1 files changed, 2 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 07e86afe9a..eefe621feb 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -157,13 +157,9 @@ module ActiveRecord
           end
         end
 
-        def types_which_need_no_typecasting
-          [nil, Numeric, String]
-        end
-
         def _quote(value)
           case value
-          when String, ActiveSupport::Multibyte::Chars
+          when String, Symbol, ActiveSupport::Multibyte::Chars
             "'#{quote_string(value.to_s)}'"
           when true       then quoted_true
           when false      then quoted_false
@@ -174,7 +170,6 @@ module ActiveRecord
           when Type::Binary::Data then quoted_binary(value)
           when Type::Time::Value then "'#{quoted_time(value)}'"
           when Date, Time then "'#{quoted_date(value)}'"
-          when Symbol     then "'#{quote_string(value.to_s)}'"
           when Class      then "'#{value}'"
           else raise TypeError, "can't quote #{value.class.name}"
           end
@@ -188,10 +183,9 @@ module ActiveRecord
           when false      then unquoted_false
           # BigDecimals need to be put in a non-normalized form and quoted.
           when BigDecimal then value.to_s("F")
+          when nil, Numeric, String then value
           when Type::Time::Value then quoted_time(value)
           when Date, Time then quoted_date(value)
-          when *types_which_need_no_typecasting
-            value
           else raise TypeError
           end
         end