function main(insight) {
    var mainTable = insight.grid.mainTable; //获取表格对象
    var columnFieldSize = insight.grid.columnFieldList.length; //获取列区个数
    var measureFieldSize = insight.grid.measureFieldList.length; //获取度量值个数
    var headSize = columnFieldSize > 0 ? (measureFieldSize > 1 ? columnFieldSize + 1 : columnFieldSize) : 1;
    var idx = 0;
    var rowSpan = 1;
    var trObj = mainTable.rows[0];
    while (trObj != null) {
        if (headSize > 1) {
            headSize--;
            var firstChild = trObj.firstChild;
            var blankTd = firstChild.cloneNode(true);
            trObj.insertBefore(blankTd, firstChild);
        } else if (rowSpan > 1) {
            rowSpan--;
        } else {
            var firstChild = trObj.firstChild;
            var blankTd = firstChild.cloneNode(true);
            if (idx == 0) {
                var span = blankTd.firstChild.firstChild.nextSibling;
                span.innerHTML = "序号";//设置排序的表格表头
            } else {
                blankTd.align = 'center';
                blankTd.innerHTML = "" + idx;
            }
            idx++;
            trObj.insertBefore(blankTd, firstChild);
            rowSpan = firstChild.rowSpan;
        }
        trObj = trObj.nextSibling;
    }
}