How to assign a comman seperated string value in the IN Clause of SELECT st

Question

In table A I have following values
ID price
1 100
2 200
3 300
4 400
6 500
Now in table B, I have following values
Product price combi
OIL 600 ‘1’,’2’,’3’
What I need to do is, to first get the combi value from table B and then get the count from table A.
In above condition, it should return 3…
create or replace procedure amit_combi_test
as
v_combi varchar2(100);
tot_row number(10);
cursor table_combi is
select combi
from B;
BEGIN
OPEN table_combi;
LOOP
FETCH table_combi into v_combi;
EXIT WHEN table_combi%NOTFOUND;
dbms_output.put_line (v_combi);
select count(1) INTO tot_row
from A
where ID in (v_combi);
dbms_output.put_line (to_char(tot_row));
END LOOP;
CLOSE table_combi;
END;
But the problem is… it shows the value of variable tot_row = 0; it should come 3…

Answer 1

ace_friends22 wrote:
Hi All,
TABLE A and TABLE B does not have only those values...
in table B i may have value of combi column = '4','6'.. in that case i should get the count = 2.
The idea to get the count is to decide how many times i need to iterate the logic.
for i in tot_row LOOP
logic
....You mean like this?
SQL> ed
Wrote file afiedt.buf
  1  with A as (select 1 as id, 100 as price from dual union all
  2             select 2, 200 from dual union all
  3             select 3, 300 from dual union all
  4             select 4, 400 from dual union all
  5             select 6, 500 from dual)
  6      ,B as (select 'OIL' as product, 600 as price, q'['1','2','3']' as combi from dual union all
  7             select 'FRED', 400, q'['1','3']' from dual)
  8  --
  9  select b.product, count(*) as cnt
10  from b join a on (a.id in (select to_number(regexp_substr(b.combi,'[0-9]+',1,rownum))
11                             from dual
12                             connect by rownum <= length(regexp_replace(b.combi,q'{[0-9']}'))+1)
13                   )
14* group by b.product
SQL> /
PROD        CNT
FRED          2
OIL           3
SQL>