title: Complex Where statement
body: <p>I've got a simple query as example:</p>
  <pre><code>Select 
      test_table.country,
      test_table.postcode
  From test_table
  Where
      test_table.country Like 'B%'
      Or
      test_table.postcode Like '1%'
  </code></pre>
  <p>Which lists all countries starting with letter B and any postcode, or all counrtries with postcodes starting with 1.
  I want to exclude all countries starting with 'C' if their postcode starts with '1'</p>
  <pre><code>test_table.country Not Like 'C%' And test_table.postcode Not Like '1%'
  </code></pre>
  <p>How do I achieve it without ruining previous queries?</p>