How to create
Creating the Derived Field Descriptor (Derived FD)
The first step is to create a derived field descriptor. The easiest way to do this is to find a field similar to what you want your derived field to be like. Copy that field descriptor and change the name using the “D_” before the name of that field descriptor. Then give the External Name some name that you want your string search textbox to display. I will name my example, “Search.” Then set the FD type to Derived in the Field Descriptor Type settings, which is under Advanced settings in the FD Manager.
Note: It is best to use a Derived FD for the Predictive Search textbox. This will help ensure no standard FD is currently being used for something else that might conflict with one another in the future.
example: naming your derived field descriptor
The next step is to set the Display Component to JQuery Autocomplete.
example: setting the Display Component setting to JQuery Autocomplete - zoom in view
example: setting the Field Descriptor Type to Derived.
example: getting the derived field descriptor id to use in SQL Operation