title: String Comparision in If condition in PL/SQL
body: <p>I have the following code</p>
  
  <pre><code>create or replace procedure deact_user (i_email in varchar2)
  as
    var1 varchar2(200);
  
  begin
    for em_id in (select abc.emai_id from abc)
    loop
      if (i_email &lt;&gt; em_id) then
        dbms_output.put_line('Not working');
      else
        dbms_output.put_line('Working');
      end if;
    end loop;
  end;
  </code></pre>
  
  <p>I need to compare the i_email which is a input parameter with em_id which is a for loop which loops the table abc having field as emai_id. 
  Iam facing error PLS=00306 wrong type of arguments in call to '!='
  Please help</p>