Return a jQuery list with all HTML column nodes of all records.
example
// set background color for table columnvarcontrolGroup = ix.util.getUp("[TABLE-GUID]").getControlGroup("[CONTROL-GUID]");controlGroup.getHtml().css('backgroundColor', 'blue');
Returns JQuery<HTMLElement>
getSum
getSum(): null | number
Calculate sum of one datarange column (if applicable).
Represents a table column - a collection of record objects (UpDatarangeControl).