Query ,QueryBuildDataSource ,QueryBuildRnage in axapta

Query and QueryBuildDataSource

{
    Query q = new Query();
    QueryBuildDataSource ds;
    ;

        ds = q.addDataSource(TableNum(CustTable));
}

Add more than one DataSource

{
    Query q = new Query();
    QueryBuildDataSource ds ;

    QueryBuildDataSource ds1;
    ;

        ds = q.addDataSource(TableNum(CustTable));

        ds1 = ds.addDataSource(TableNum(CustTrans));
}
  

Add proper Range 

{
    Query q = new Query();
    QueryBuildDataSource ds ;

    QueryBuildDataSource ds1;
    ;

        ds = q.addDataSource(TableNum(CustTable));

        ds1 = ds.addDataSource(TableNum(CustTrans));

        ds1.relation(true)

        ds1.addrange(FieldNum(CustTrans,fieldnum)).value(noyes::yes);
}