PL/SQL check if query returns empty

Question

I\'m writing a procedure, and i need to check whether my select query returned an empty record or not. (In this example whether there is no x,y shelf)

How can i do t

Answer 1

Use an exception handler

Begin
  select column
  into variable
  from table
  where ...;

  -- Do something with your variable

exception
 when no_data_found then
    -- Your query returned no rows --

 when too_many_rows
    -- Your query returned more than 1 row --

end;