default_sequence_name

# File activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb, line 290
        def default_sequence_name(table_name, pk = nil) #:nodoc:
          result = serial_sequence(table_name, pk || 'id')
          return nil unless result
          Utils.extract_schema_qualified_name(result).to_s
        rescue ActiveRecord::StatementInvalid
          PostgreSQL::Name.new(nil, "#{table_name}_#{pk || 'id'}_seq").to_s
        end