public static server str DefaultDimension()
{

    str field = SysComputedColumn::returnField(tableStr(HRSJobPositionDefaultDimension),
                    identifierStr(HcmPositionDefaultDimension),
                    fieldStr(HcmPositionDefaultDimension, DefaultDimension));
    
    return SysComputedColumn::if(
        SysComputedColumn::isNullExpression(field),
        SysComputedColumn::cast("0",'BIGINT'),  
        SysComputedColumn::cast(field,'BIGINT'));
}