Merge pull request rsim#173 from yahonda/address_no_method_error_colu…

…mn_types_rails4

Address NoMethodError: undefined method `column_types'

lib/active_record/connection_adapters/oracle_enhanced_adapter.rb

@@ -1097,7 +1097,7 @@ def columns_without_cache(table_name, name = nil) #:nodoc:
         SQL
 
         # added deletion of ignored columns
-        select_all(table_cols, name).delete_if do |row|
+        select_all(table_cols, name).to_a.delete_if do |row|
           ignored_columns && ignored_columns.include?(row['name'].downcase)
         end.map do |row|
           limit, scale = row['limit'], row['scale']
@@ -1273,7 +1273,7 @@ def translate_exception(exception, message) #:nodoc:
 
       def select(sql, name = nil, binds = [])
         if ActiveRecord.const_defined?(:Result)
-          exec_query(sql, name, binds).to_a
+          exec_query(sql, name, binds)
         else
           log(sql, name) do
             @connection.select(sql, name, false)