How to write this postgresql dynamic query

Question

I have a custom spatial function and its working with this parameters (coordinates):

SELECT get_nearest_station (-80.364565, 26.070670);

Now, I want to update column "SOURCE" for all rows in a table 'employees_wgs' with this function. Coordinates are in columns X and Y for each record so I have to replace real coordinates with value from those columns.

How to write this query ? Is this need to be dynamic sql or else ?

Thanks

Answer 1

update employees_wgs
  set source = get_nearest_station(x,y);
commit;