How to compare two fields in QueryBuilder?

Question

I'm using QueryBuilder. I want to select all record in VendTable having two equal fields.

My code is looklike this:

QueryBuildDataSource qbds;
QueryRun        queryRun;

qbds= queryRun.query().dataSourceTable(tableNum(VendTable));
qbds.addRange(fieldNum(VendTable, BirthDate))
.value(strFmt('%1 == %2',strFmt("%1.%2",qbds.name(), fieldStr(VendTable,BirthDate)) ,strFmt("%1.%2", qbds.name(),fieldStr(VendTable,FieldTransDate))));

On Debug I see thie query value:

SELECT * FROM VendTable(VendTable_1) WHERE ((BirthDate = {ts '1900-01-01 00:00:00.000'}))

But not work, I would like to create this query :

select vendTable
 where vendTable.BirthDate== vendTable.FieldTransDate;

SELECT * FROM VendTable(VendTable_1) WHERE ((BirthDate = FieldTransDate))

I want to compare the Fields on same Table BirthDate == FieldTransDate

How I can make the query shown above by QueryBuilder ?

Thanks, enjoy!

Answer 1

You do not use the correct syntax for a query expression. Remember the parentheses:

qbds.addRange(fieldNum(VendTable, BirthDate))
    .value(strFmt('(%1 == %2)',
                  strFmt("%1.%2", qbds.name(), fieldStr(VendTable, BirthDate)),
                  strFmt("%1.%2", qbds.name(), fieldStr(VendTable, TransDate))));