text: CREATE STREAM R(A int, B int) FROM FILE 'examples/data/simple/r.dat' LINE DELIMITED CSV();
  
  CREATE STREAM S(B int, C int) FROM FILE 'examples/data/simple/s.dat' LINE DELIMITED CSV();
  
  CREATE STREAM T(C int, D int) FROM FILE 'examples/data/simple/t.dat' LINE DELIMITED CSV();
  
  SELECT 
    t1.*, 
    t2.*
  FROM 
    S, 
    T t1, 
    T t2
  WHERE 
    t1.D = t2.C 
      OR 
    2 = (S.B*t1.D)
  ;
  