title: MySQL Update of Columns using INFORMATION_SCHEMA - is this possible?
body: <p>I know that I can view the properties and do some amazing things to learn my db/table/field structure using <code>INFORMATION_SCHEMA</code>.</p>
  
  <p>However, is it possible to update a field value in for example the <code>COLUMNS</code> table and thus update the actual column?  For example setting nullable from NO to YES.</p>
  
  <p>If this is not directly possible, I realize that I could use the query to CONCAT an <code>ALTER</code> string and then run those strings.  However is there in that case a way to instead run an <code>eval()</code> command to do this in one operation?  Thanks.</p>