D365FFO – AX – Filter a non-empty value – X++

If you want to check if a string field has a non-empty value you can use sysquery::valueNotEmptyString() method

Some examples:

//Make a query that extract all PurchLine rows with PurchId with a non-empty value :
this.query().dataSourceTable(tableNum(PurchLine)).addRange(fieldNum(PurchLine,PurchId)).value(sysquery::valueNotEmptyString());