title: SQLite: Select table1 columns where table1.columnA != table2.columnA and table2.Date = this month
body: <p>I want query code for above question.</p>
  
  <p>sample data:<br>
  <strong>Customers(table1):</strong><br>
  name       cpuid<br>
  john   ABX0001<br>
  suneel     ABX0002<br>
  james      ABX0003<br></p>
  
  <p><strong>Paid(table2):</strong><br>
  name       cpuid     paid  date<br>
  john       ABX0001   3000  2016-04-11<br>
  james      ABX0003   4000  2016-04-05</p>