Creating a query through X++ code

static void CustTableSales1(Args _args)
{
Query       query;
QueryRun    queryrun;
QueryBuildDataSource    qbds1;
QueryBuildDataSource    qbds2;
QueryBuildRange         qbr1;
QueryBuildRange         qbr2;
CustTable               custTable;
;
query   = new query();
qbds1   =   query.addDataSource(tablenum(CustTable));
qbds1.addSortField(fieldnum(custTable,AccountNum),Sortorder::Descending);
qbr1    = qbds1.addRange(fieldnum(custTable,custGroup));
qbr1.value(queryvalue(’10′));
qbr2    =  qbds1.addRange(fieldnum(custTable,Blocked));
qbr2.value(queryvalue(CustVendorBlocked::No));
qbds2   = qbds1.addDataSource(tablenum(SalesTable));
qbds2.relations(false);
qbds2.joinMode(joinmode::ExistsJoin);
qbds2.addLink(fieldnum(CustTable,AccountNum),fieldnum(SalesTable,CustAccount));
queryrun    = new queryrun(query);
while(queryrun.next())
{
custTable   = queryrun.get(tablenum(custTable));
info(strfmt(“%1 – %2″,custtable.AccountNum,custTable.Name));
}
}