sql - How to write this postgresql dynamic query -

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i have custom spatial function , working parameters (coordinates):

select get_nearest_station (-80.364565, 26.070670);

now, want update column "source" rows in table 'employees_wgs' function. coordinates in columns x , y each record have replace real coordinates value columns.

how write query ? need dynamic sql or else ?

thanks

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

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