Release 10.1A: OpenEdge Development:
ADM Reference

QuerySort

Property that contains the sorting criteria (BY phrase) of the database query. The value of this property is then stored in the QueryString property.

Data type: CHARACTER

Notes:

Read and Write.
If you need to set the query sort criteria using a field that was renamed in a SmartDataObject (SDO), you must qualify the field name using RowObject. For example, if a SmartDataObject for the customer table includes the field customer.contact and that field was renamed to custContact in the SDO, you can pass the custContact field to setQuerySort either as the field RowObject.custContact or the database column name contact.
The sort expression is removed if blank is passed as input.
setQueryWhere overrides the entire query string including any previous setting of the QuerySort.