Query to replace blank or null to zero

Question

I have query as below
Select id from table1 where id =32
I dont have value in table1 for id=32.In this case i need to get a result like 0.Basically if nothing is there for that query it shoulh return 0.
of the query is like below
Select id from table1 where id in (12,32,10,42)
the result should be as below. There is no id for 32 and 42 so it should be 0
12
0
10
0
Please help

Answer 1

user10285699 wrote:
I have query as below
Select id from table1 where id =32
I dont have value in table1 for id=32.In this case i need to get a result like 0.Basically if nothing is there for that query it shoulh return 0.
of the query is like below
Select id from table1 where id in (12,32,10,42)
the result should be as below. There is no id for 32 and 42 so it should be 0
12
0
10
0
Please helpI used the with clause to generate data as i suppose you have it. In the future, providing this along with your version number is greatly beneficial for everyone involved in the process.
I have also used a generic Oracle Type, if you have your own feel free to use that (it's just a table of numbers) which we use to outer join to your data, whenever we cannot join (the outer join kicks in) we decode that NULL value to 0.
TUBBY?with your_data as
  2  (
  3    select 12 as id from dual union all
  4    select 10 from dual
  5  )
  6  select
  7    nvl(d.id, 0)
  8  from
  9    your_data                               d,
10    table(sys.odcinumberlist(12,32,10,42))  t
11  where
12    t.column_value  = d.id  (+);
       NVL(D.ID,0)
                12
                 0
                10
                 0
4 rows selected.
Elapsed: 00:00:00.10
TUBBY?