9 lines
413 B
SQL
9 lines
413 B
SQL
/*Write a SQL statement to make a cartesian product between salesman and customer i.e. each salesman will appear for all
|
|
customer and vice versa for those salesmen who must belong a city which is not the same as his customer and the customers
|
|
should have an own grade.*/
|
|
SELECT *
|
|
FROM salesman a
|
|
CROSS JOIN customer b
|
|
WHERE a.city IS NOT NULL
|
|
AND b.grade IS NOT NULL
|
|
AND a.city<>b.city; |