    # File lib/active_record/connection_adapters/db2_adapter.rb, line 131
            def columns(table_name, name = nil)
              result = []
              schema = @connection_options[:schema] || '%'
              with_statement do |stmt|
                stmt.columns(table_name, schema).each do |c|
                  c_name = c[3].downcase
                  c_default = c[12] == 'NULL' ? nil : c[12]
                  c_default.gsub!(/^'(.*)'$/, '\1') if !c_default.nil?
                  c_type = c[5].downcase
                  c_type += "(#{c[6]})" if !c[6].nil? && c[6] != ''
                  result << Column.new(c_name, c_default, c_type, c[17] == 'YES')
                end
              end
              result
            end