text: select a + b from test1 where a + b > 1020 and b + c > 1;
  select a - b from test1 where a - b > 1020 and b - c >= 0;
  select a * b from test1 where a * b > 1020 and b * c < 10;
  select a / b from test1 where a / b > 1020 and b * c = 1;