Use case when with comparasion operator : Case Query « Select Query « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Select Query
  3. Case Query

Use case when with comparasion operator

   
SQL>
SQL> create table emp(
  2            emp_no                 integer         primary key
  3           ,lastname               varchar2(20)    not null
  4           ,firstname              varchar2(15)    not null
  5           ,midinit                varchar2(1)
  6           ,street                 varchar2(30)
  7           ,city                   varchar2(20)
  8           ,state                  varchar2(2)
  9           ,zip                    varchar2(5)
 10           ,shortZipCode                  varchar2(4)
 11           ,area_code              varchar2(3)
 12           ,phone                  varchar2(8)
 13           ,salary                 number(5,2)
 14            ,birthdate              date
 15           ,startDate               date
 16           ,title                  varchar2(20)
 17           ,dept_no                integer
 18           ,mgr                    integer
 19           ,region                 number
 20           ,division               number
 21           ,total_sales            number
 22    );

Table created.

SQL>
SQL>
SQL>
SQL>
SQL>
SQL> create table avg_sal
  2   as select avg(salary) AS avg_Sal from emp;

Table created.

SQL>
SQL> select lastname, salary,
  2   CASE WHEN salary > avg_sal THEN '> Average of ' || to_char(avg_sal, '99.99')
  3        WHEN salary < avg_sal THEN '< Average of ' || to_char(avg_sal, '99.99')
  4        ELSE '= Average of ' || to_char(avg_sal, '99.99')
  5        END
  6   from emp, avg_sal
  7   /

no rows selected

SQL>
SQL> drop table emp;

Table dropped.

SQL>
SQL>
SQL>
SQL>
SQL> drop table avg_Sal;

Table dropped.

SQL>








Related examples in the same category

1.You could use the case statement in an SQL statement
2.Combine case with NVL function
3.Combine Case with group by
4.Use the CASE expression and SUM function
5.Use the CASE expression and SUM function to create an order price report
6.case switch based on clob data
7.Use case ... when to output comments for marks
8.Use case when and grouping function together
9.Use case when clause to decode value
10.Use case when statement to replace if statement
11.Use case when statement with between ... and
12.Use case when statement with exists and subquery
13.Use case when statement with in()
14.Use case when statement with to_char() like
15.A searched CASE statement
16.use case when to control the order index
17.case when count(*) NOT between ... and
18.Rename case when column