title: Variable 'varName' is not found on DBC database
body: <p>I have a DBC container with many DBF tables inside.</p>
  
  <p>The format of the tables are different between them, like this:</p>
  
  <p>tables with <code>b8_</code> on the name doesn't contain the column <code>'NUMEROSBIS3'</code> and tables with the <code>tsn_</code> on the name have the column <code>'NUMEROSBIS3'</code></p>
  
  <p>If i want to remove the table from the container i execute the next statement:</p>
  
  <pre><code>EXECSCRIPT([REMOVE TABLE tsn20150426])
  </code></pre>
  
  <p>With this statement the table is removed from the DBC container but if i perform a <code>select</code> statement like this:
  <code>SELECT * FROM tsn20150426</code> then i get the error <code>Variable 'NUMEROS3BIS' is not found</code>. BUT if i perform <code>EXECSCRIPT([REMOVE TABLE b8_20130811])</code> (a table that doesn't contain the <code>'NUMEROS3BIS</code> column (removing the table) and then i perform <code>SELECT * FROM b8_20130811</code> i get the data with out errors!</p>
  
  <p>What's the difference between this two actions? Why the table with the column <code>'NUMEROS3BIS'</code> (<code>tsn_</code> prefix on the table) get that error on the <code>select</code> statement and the other table (<code>b8_</code> prefix on the table) doesn't throw the error?</p>
  
  <p>I have to say that in every action the physical file is never removed or moved or anything.</p>