Product wise count

Question

Oracle 11.2.0.1
Windows 7
I have two tables:
1.Product_master
(prod_id, prod_name)
2.Sales_master
(billno,prd1,prd2,prd3,prd4,prd5)
Prd(n) columns says that bill's sold product ids, i.e. in one bill there can be max 5 products exists, may also be less than 5 but at least one, no repitation of id.
Now, I have a select query by which i may get the total counts of a prod id with its name, i.e. Suppose prod id 10 exists in bill no. 100,200,205 and prod id in bill no. 100,103,205 then output should be:
10 prod1 3
20 prod2 3
3 means these products has been sold 3 times/3 different bills were generated.
Kindly help me.
Thanks.

Answer 1

create table sales_master(billno varchar2(10),prd1 varchar2(2),prd2 varchar2(2),prd3 varchar2(2),prd4 varchar2(2),prd5 varchar2(2));
insert into sales_master values ('123456','40','25','14',null,null);
insert into sales_master values ('123457','10',null,null,null,null);
insert into sales_master values ('123458','15','03','42','18','23');
insert into sales_master values ('123459','15',null,null,null,null);
insert into sales_master values ('123460','03','10','40',null,null);
insert into sales_master values ('123461','14','42',null,null,null);
--Another Table :
create table prod_master(product_id varchar2(2),product_name varchar2(30));
insert into prod_master values ('01','COLD-II STRIPS');
insert into prod_master values ('02','IRON RINGS');
insert into prod_master values ('10','METAL RINGS');
insert into prod_master values ('03','SOLID PIPES-I');
insert into prod_master values ('14','COPPER ROD-2CM');
insert into prod_master values ('40','H.P.C.F.');
insert into prod_master values ('42','KRD-CMT');
insert into prod_master values ('25','BROON TOUGH');
insert into prod_master values ('15','ROUND CHIPS-KP');
insert into prod_master values ('23','ZERO WIRE-2P');
insert into prod_master values ('18','FLAT CHIPS-KP');
commit;
SQL> select * from sales_master;
BILLNO     PR PR PR PR PR
123456     40 25 14
123457     10
123458     15 03 42 18 23
123459     15
123460     03 10 40
123461     14 42
6 rows selected.
SQL> select * from prod_master;
PR PRODUCT_NAME
01 COLD-II STRIPS
02 IRON RINGS
10 METAL RINGS
03 SOLID PIPES-I
14 COPPER ROD-2CM
40 H.P.C.F.
42 KRD-CMT
25 BROON TOUGH
15 ROUND CHIPS-KP
23 ZERO WIRE-2P
18 FLAT CHIPS-KP
11 rows selected.Required Output : Product wise count of bills, suppose I want to get whole products count then :
SELECT       p.product_id, p.product_name
,    COUNT (DISTINCT s.billno)     AS cnt
FROM         prod_master  p
JOIN         sales_master    s  ON  p.product_id  IN ( s.prd1
                                          , s.prd2
                                          , s.prd3
                                          , s.prd4
                                          , s.prd5
GROUP BY  p.product_id, p.product_name
ORDER BY 1
PR PRODUCT_NAME    COUNT [This is only comment part please]
03 SOLID PIPES-I       2 (Because It has been sold under 2 bills i.e. 123458,123460)
10 METAL RINGS         2 (Because It has been sold under 2 bills i.e. 123457,123460)
14 COPPER ROD-2CM      2 (Because It has been sold under 2 bills i.e. 123456,123461)
15 ROUND CHIPS-KP      2 (Because It has been sold under 2 bills i.e. 123458,123459)
18 FLAT CHIPS-KP       1 (Because It has been sold under 1 bill i.e. 123458)
23 ZERO WIRE-2P        1 (Because It has been sold under 1 bill i.e. 123458)
25 BROON TOUGH         1 (Because It has been sold under 1 bill i.e. 123456)
40 H.P.C.F.            2 (Because It has been sold under 2 bills i.e. 123456,123460)
42 KRD-CMT             2 (Because It has been sold under 2 bills i.e. 123458,123461)
Which your above worked perfectly.Now, if suppose I wish to get count of only for product_id in('15,'23','42') then output should be :
PR PRODUCT_NAME    COUNT
15 ROUND CHIPS-KP      2 (Because It has been sold under 1 bills i.e. 123458,123459)
23 ZERO WIRE-2P        1 (Because It has been sold under 1 bills i.e. 123458)
42 KRD-CMT             2 (Because It has been sold under 2 bills i.e. 123458,123461)
SELECT       p.product_id, p.product_name
,    COUNT (DISTINCT s.billno)     AS cnt
FROM         prod_master  p
JOIN         sales_master    s  ON  p.product_id  IN ( s.prd1
                                          , s.prd2
                                          , s.prd3
                                          , s.prd4
                                          , s.prd5
where p.product_id in('15','42','23')
GROUP BY  p.product_id, p.product_name
ORDER BY 1
It also worked perfectly.Ok, now suppose if I says :
insert into sales_master values ('123462','22',null,null,null,null);
--i.e. product id which is is not in product master table and I says :
SELECT       p.product_id, p.product_name
,    COUNT (DISTINCT s.billno)     AS cnt
FROM         prod_master  p
full JOIN         sales_master    s  ON  p.product_id  IN ( s.prd1
                                          , s.prd2
                                          , s.prd3
                                          , s.prd4
                                          , s.prd5
GROUP BY  p.product_id, p.product_name
ORDER BY 1
PR PRODUCT_NAME                          CNT
01 COLD-II STRIPS                          0
02 IRON RINGS                              0
03 SOLID PIPES-I                           2
10 METAL RINGS                             2
14 COPPER ROD-2CM                          2
15 ROUND CHIPS-KP                          2
18 FLAT CHIPS-KP                           1
23 ZERO WIRE-2P                            1
25 BROON TOUGH                             1
40 H.P.C.F.                                2
42 KRD-CMT                                 2
PR PRODUCT_NAME                          CNT
                                           1
12 rows selected.while I need :
03 SOLID PIPES-I                           2
10 METAL RINGS                             2
14 COPPER ROD-2CM                          2
15 ROUND CHIPS-KP                          2
18 FLAT CHIPS-KP                           1
22 [New Product]                           1  <<----
23 ZERO WIRE-2P                            1
25 BROON TOUGH                             1
40 H.P.C.F.                                2
42 KRD-CMT                                 2In addition to above, I need output as below also (new requirement told by admin after posting the question, I am sorry)
Final required output (by adding new requirement after question posting)
PR PRODUCT_NAME                          CNT    BILL1      BILL2     BILL3    BILL4
03 SOLID PIPES-I                           2   123458     123460
10 METAL RINGS                             2   123457     123460
14 COPPER ROD-2CM                          2   123456     123461
15 ROUND CHIPS-KP                          2   123458     123459
18 FLAT CHIPS-KP                           1   123458    
22 [New Product]                           1   123462                                   
23 ZERO WIRE-2P                            1   123458    
25 BROON TOUGH                             1   123456     
40 H.P.C.F.                                2   123456     123460
42 KRD-CMT                                 2   123458     123461i.e. if count of product is less than 4 bills then those bill numbers should also be there, because those products are rarely sold and we wish to know who purchased those products by looking into that bill number.
I am again thankful to you for your support.
Thanks.
Edited by: user12050217 on Dec 10, 2012 8:57 PM