title: DB2 automatic trim tailing whitespace
body: <p>This is data in TB_USER table</p>
  
  <pre><code>USER_USERID    
   --------------     
   A111           
   A9999          
   ADMIN          
   AHO            
   AHO2           
   AHO3           
   AHO4     
  </code></pre>
  
  <p>...and schema of TB_USER table is</p>
  
  <pre><code> COLUMN_NAME           DATA_TYPE  DATA_LENGTH  
   --------------------  ---------  ----------- 
   USER_USERID           VARCHAR    15        
  </code></pre>
  
  <p>When I execute following SELECT statement:</p>
  
  <pre><code> SELECT USER_USERID FROM TB_USER WHERE USER_USERID = 'ADMIN '
  </code></pre>
  
  <p>...and:</p>
  
  <pre><code> SELECT USER_USERID FROM TB_USER WHERE USER_USERID = 'ADMIN'
  </code></pre>
  
  <p>DB2 retreive same output following</p>
  
  <pre><code>USER_USERID    
   -------------- 
   ADMIN   
  </code></pre>
  
  <p>How to fix this problem?</p>