text: -- EqualTo
  select 1 = 1;
  select 1 = '1';
  select 1.0 = '1';
  select 1.5 = '1.51';
  
  -- GreaterThan
  select 1 > '1';
  select 2 > '1.0';
  select 2 > '2.0';
  select 2 > '2.2';
  select '1.5' > 0.5;
  select to_date('2009-07-30 04:17:52') > to_date('2009-07-30 04:17:52');
  select to_date('2009-07-30 04:17:52') > '2009-07-30 04:17:52';
   
  -- GreaterThanOrEqual
  select 1 >= '1';
  select 2 >= '1.0';
  select 2 >= '2.0';
  select 2.0 >= '2.2';
  select '1.5' >= 0.5;
  select to_date('2009-07-30 04:17:52') >= to_date('2009-07-30 04:17:52');
  select to_date('2009-07-30 04:17:52') >= '2009-07-30 04:17:52';
   
  -- LessThan
  select 1 < '1';
  select 2 < '1.0';
  select 2 < '2.0';
  select 2.0 < '2.2';
  select 0.5 < '1.5';
  select to_date('2009-07-30 04:17:52') < to_date('2009-07-30 04:17:52');
  select to_date('2009-07-30 04:17:52') < '2009-07-30 04:17:52';
   
  -- LessThanOrEqual
  select 1 <= '1';
  select 2 <= '1.0';
  select 2 <= '2.0';
  select 2.0 <= '2.2';
  select 0.5 <= '1.5';
  select to_date('2009-07-30 04:17:52') <= to_date('2009-07-30 04:17:52');
  select to_date('2009-07-30 04:17:52') <= '2009-07-30 04:17:52';
  