Description of problem: Query ""SELECT stringNum FROM bqt1.SmallA <> 0" returns also values NULL (empty cell in spreadsheet). I.e., NULL is treated as different from 0. Version-Release number of selected component (if applicable): How reproducible: always Steps to Reproduce: Please see attached JIRA TEIID-4468 1. 2. 3. Actual results: Expected results: Additional info: