Query IN « Select Query « Oracle PL / SQL

1.Query with an IN operator
2.Use in operator with number type values
3.Use in operator with 'and' in where clause
4.Use in operator with table join
5.Using the IN operator: compare with OR
6.NOT IN processes a null in a list of values
7.Use in operator with varchar2 type value
8.all customers who have placed at least one order from us in the last month
9.not in (1,2,3,NULL)

10.not in vs not exists
11.Value pair and in operator
12.All attendees whose id is not in the list
13.Use in operator to match three employee numbers