Declare a variable with a select statement - PL SQL

Question

Is there a way to declare a variable with a select statement? Below is an example.

  Declare
P_Price orders.p_price%type;
  Begin 
    P_Price := (select price from products where p_id = 1000); 

Look up price in a table to declare the price

Answer 1

You declare a variable in the declaration section (between declare and begin in an anonymous PL/SQL block). You seem to be asking about assigning a value to that variable. You do that with a select into .

select price
  into p_price
  from products
 where p_id = 1000;

If the query returns anything other than 1 row, you'll get an exception. no_data_found if the query returns 0 rows and too_many_rows if the query returns more than 1 row.

If you want the full anonymous block (including the declaration section that you already had unchanged)

declare
  p_price products.price%type;
begin
  select price
    into p_price
    from products
   where p_id = 1000;
end;