title: How to check value exist of an input param value as a list against a PL/SQL variable value?
body: <p>C# variable</p>
  
  <pre><code>string val_1 = 'A','B','C';
  </code></pre>
  
  <p>I pass this variable as a PL/SQL method parameter and check a value of another variable in the PL/SQL method as follows:</p>
  
  <pre><code>Procedure x(val_1 IN VARCHAR2)
  IS
      val_2  VARCHAR2(1):= 'A';
  BEGIN
      IF (val_2 IN (val_1)) THEN
          dbms_output.put_line('matched');
      END IF;
  END;
  </code></pre>
  
  <p>This condition is not working. Any idea what I am doing wrong?</p>