BEGIN
  DECLARE l_store varchar(100);
  SELECT store INTO l_store FROM shift s WHERE s.cash_id=in_cash_id LIMIT 1;
  insert into oo (store) VALUES (l_store);
end;

BEGIN
  DECLARE l_store varchar(100);
  DECLARE l_cash_number int(11);
  SELECT store INTO l_store ,
         cash_number INTO l_cash_number 
  FROM shift s WHERE s.cash_id=in_cash_id LIMIT 1; 
  insert into oo (store,cash_number) VALUES (l_store,l_cash_number);
end;
 

  SELECT store,cash_numer INTO l_store,l_cash_number  
  FROM shift s WHERE s.cash_id=in_cash_id LIMIT 1;