AX 2012 Group by with common table

Question

How to group by a common table with a specific field?

I'm getting a syntax error on (dt.fieldname2Id('BatchNo'))

Here's my code:

Common          common;
SysDictTable    dt;

dt        =    SysDictTable::newName('Table1');
common    =    dt.makeRecord();

while select count(RecId) from common
    group by common.(dt.fieldname2Id('BatchNo'))  //syntax Error here
    where common.(dt.fieldname2Id('flag'))==1
{
    info(int642str(Common.Recid));
}

Answer 1

You can use Query instead:

Common                  common;
SysDictTable            dt;
Query                   query = new Query();
QueryBuildDataSource    qbds; 
QueryRun                queryRun;

dt     = SysDictTable::newName('SalesTable');
common = dt.makeRecord();

qbds = query.addDataSource(common.TableId);
qbds.addGroupByField(dt.fieldname2Id('CustAccount'));

queryRun = new QueryRun(query);

while (queryRun.next())
{
    ...
}