value of range not null in a dataSource of a form

Hi

I want in the executeQuery of my dataSource in a form to add a range and the value of the field could not be null :?:
What to do ?

Thanks for responding me

Here is the solution

this.query().dataSourceTable(tablenum(CustConfirmJour)).addRange(Fieldnum(CustConfirmJour,
thy_ProformaId)).value(sysquery::valueNotEmptyString());