NVL2 Function in oracle sql plsql tutorial with example || Learn Database concept

NVL2 Function in oracle sql plsql tutorial with example || Learn Database Concept

/*It is said to be the SQL General function which checks the first input parameter value, if the first input parameter value is not null then it will
return the second parameter.Otherwise,it will return the third input parameter value. It is an extended version of the NVL.*/

/*If we try to provide more than three input values, it will provide an error. It will be returning the value after not null expression.*/

select NVL2('A','B','C') AS OUTPUT from dual;

select NVL2('NULL','B','C') AS OUTPUT from dual;

select NVL2(NULL,'B','NULL') AS OUTPUT from dual;

select NVL2('X','NULL','Z') AS OUTPUT from dual;

select * from emp;

select ename, sal,comm,NVL2(comm,'SAL+COMM','SAL') from emp;

SELECT NVL2(100,200,300,400) AS OUTPUT from dual;

SELECT NVL2(60.89,59.73,40.66) AS OUTPUT from dual;

SELECT NVL2(1,'A','B') from dual;

SELECT NVL2('A','B',1) from dual;

SELECT NVL2('A',2,1) from dual;

SELECT NVL2(A,2,1) from dual;