title: SYSIBM.SYSCOLUMNS query shows columns twice if using REMARKS
body: <p>I've noticed a strange behaviour while working with DB2 and the <code>SYSIBM.SYSCOLUMNS</code> which only appears in one table. </p>
  
  <p>This is my query:</p>
  
  <pre><code>select distinct NAME, COLTYPE, LENGTH, SCALE, REMARKS from SYSIBM.SYSCOLUMNS where  TBNAME='Table1';
  </code></pre>
  
  <p>Normally the result shows every table once. </p>
  
  <pre><code>|===================================|
  | NAME |COLTYPE|LENGTH|SCALE|REMARKS|
  |col1  | ..... |......|.....|.......|
  |col2  | ..... |......|.....|.......|
  |col3  | ..... |......|.....|.......|
  |===================================|
  </code></pre>
  
  <p>But if I use one specific table, let's call it <code>Table2</code>, every column shows up twice:</p>
  
  <pre><code>|===================================|
  | NAME |COLTYPE|LENGTH|SCALE|REMARKS|
  |col1  | ..... |......|.....|.......|
  |col1  | ..... |......|.....|.......|
  |col2  | ..... |......|.....|.......|
  |col2  | ..... |......|.....|.......|
  |col3  | ..... |......|.....|.......|
  |col3  | ..... |......|.....|.......|
  |===================================|
  </code></pre>
  
  <p>But only if I include the <code>REMARKS</code> in the select-statement. If I remove the <code>REMARKS</code> from my select, everything works as expected.</p>
  
  <p>What could be the cause of that problem? Is there something wrong with my query?</p>