text: #table1 B1
  #table2 B2
  select * from t1,t2 where t1.c1 = t2.c1;
  #table1  B1 + A1 * 1 - B1*A1
  #table2 B2 + A1 * 1 - B2*A1
  select * from t1,t2 where t1.c1 = t2.c1 or t1.c1 > 1;
  select * from t1,t2 where t1.c1 = t2.c1 and t1.c1 > 1;
  #DEFAULT_INEQ_SEL
  select * from t1,t2 where t1.c1 < t2.c1; 
  select * from t1,t2 where t1.c1 > t2.c1;
  select * from t1,t2 where t1.c1 != t2.c1;
  