Declare bind variables in SQL*Plus
You can declare a bind variable in SQL*Plus though, and select into that:
var l_test_quote varchar2(80); -- or whatever type/size you need
var l_test_id varchar2(80);
declare
l_id varchar2(80) :='test123';
begin
select test_quote, test_id
into :l_test_quote, :l_test_id
from order_link
where id = l_id;
end;
/
print l_test_quote
print l_test_id
Note the : before the references to the variables defined outside the block, indicating they are bind variables. l_id is declared inside the block so it does not have a preceding :.
In this case you could also define l_id outside the block, and avoid PL/SQL while still using a bind variable for that:
var l_id varchar2(80);
exec :l_id := 'test123';
select test_quote, test_id
from order_link
where id = :l_id;
Because the main query isn't PL/SQL any more (although the exec is; that's just a shorthand for a one-line anonymous block), you don't need to select ... into so you don't need to declare those variables.