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how can we check whether any value has been passed to string variable or not

Jaismeen-OracleFeb 23 2017 — edited Feb 27 2017

Hi All,

I have  a input variable where user can give values like 'java1','java2','java3' or 'java1' or they can even leave it blank.

Can someone please let me know whether its possible to check whether the user has given any value to this variable or not because I tried using is not null but got the below error when input variable was passed as 'java_2','java_3'

ORA-06550: line 12, column 4:

PLS-00306: wrong number or types of arguments in call to 'IS NOT NULL'

ORA-06550: line 12, column 1:

PL/SQL: Statement ignored

Is it possible to know whether any value has been passed to it or not .

Thanks in advance
This post has been answered by Jarkko Turpeinen on Feb 23 2017
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Locked on Mar 27 2017
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