# File lib/tapkit/access/adapters/csv.rb, line 365
                def prepare_update( row, qualifier )
                        @type = UPDATE_TYPE
                        @key_values = key_values_for_qualifier(@entity, qualifier)
                        value_str = ''
                        row.each do |key, value|
                                attr = @entity.attribute key
                                value_str << "#{attr.column_name} = '#{value}', "
                                add_update_list(attr, value)
                        end
                        value_str.chop!
                        value_str.chop!
                        sql = "update #{@entity.name} set #{value_str}"
                        sql << " where #{qualifier}" if qualifier
                        @statement = sql
                end