Finding "Zero Sales Products"

Question

Hi All
I am New To Oracle And Need Some Help In Writing A Query In SQL.
I Have The Below Tables
SQL> desc sales_invoice;
Name Null? Type
INVOICE_NO NUMBER(3)
INVOICE_DATE DATE
PRODUCT_CODE VARCHAR2(2)
QUANTITY NUMBER(6,3)
RATE NUMBER(6,2)
VALUE NUMBER(10,2)
SALES_TAX_TYPE VARCHAR2(6)
SALES_TAX_AMOUNT NUMBER(10,2)
TOTAL_VALUE NUMBER(10,2)
PLACE VARCHAR2(2)
SQL> select * from sales_invoice;
INVOICE_NO INVOICE_D PR QUANTITY RATE VALUE SALES_ SALES_TAX_AMOUNT TOTAL_VALUE PL
1 02-JUL-04 01 3 15 45 APGST 3.6 48.6 01
2 02-JUL-04 03 1 23 23 CST 2.76 25.76 03
3 03-JUL-04 03 2 21 42 42 02
4 04-JUL-04 02 4 19 76 APGSTG 3.04 79.04 02
5 05-JUL-04 05 5 11 55 CSTC 2.2 57.2 04
6 02-AUG-04 04 1 65 65 APGST 5.2 70.2 01
7 07-AUG-04 03 3 14 42 42 03
5 10-AUG-04 05 -3 11 -33 CSTC -1.32 -34.32 04
8 11-AUG-04 02 4 12 48 CST 5.76 53.76 03
9 19-AUG-04 02 3 17 51 APGSTG 2.04 53.04 02
10 05-SEP-04 01 5 15 75 CST 9 84 03
10 06-SEP-04 01 -5 15 -75 CST -9 -84 03
11 07-SEP-04 03 3 25 75 CST 9 84 04
12 15-SEP-04 05 5 15 75 APGST 4 54 02
13 20-SEP-04 03 3 20 60 APGSTG 2.4 62.4 01
15 rows selected.
SQL> desc product;
Name Null? Type
PRODUCT_CODE VARCHAR2(2)
PRODUCT_NAME VARCHAR2(20)
LIST_PRICE NUMBER(6,2)
COST NUMBER(6,2)
UNIT VARCHAR2(3)
SQL> select * from product;
PR PRODUCT_NAME LIST_PRICE COST UNI
01 TOOTH PASTE 15 14 NO
02 SOAP 20 15 NO
03 SHAMPOO 25 22 NO
04 SUNFLOWER OIL 65 45 KG
05 MINERAL WATER 12 10 LT
SQL> desc place;
Name Null? Type
PLACE VARCHAR2(2)
PLACE_NAME VARCHAR2(20)
SQL> select * from place;
PL PLACE_NAME
01 HYDERABAD
02 SECUNDERABAD
03 BANGLORE
04 CHENNAI
Here I Want To Find Out "Place wise,Productname wise-'zero sales products.
Thanks In Advance
Sasi

Answer 1

here is one emp/dept example with partitioned outer join (10g new feature)
All jobs which does not exist in a department (=all department / job which have no employee)
SQL> select job, dept.deptno from emp partition by (job) right outer join dept on (dept.deptno = emp.deptno) where ename is null;
JOB           DEPTNO
ANALYST           10
ANALYST           30
ANALYST           40
CLERK             40
MANAGER           40
PRESIDENT         20
PRESIDENT         30
PRESIDENT         40
SALESMAN          10
SALESMAN          20
SALESMAN          40Enjoy your tea :-)
Laurent