text: SELECT tab0.v1 AS v1 , tab0.v0 AS v0 , tab1.v2 AS v2 
   FROM    (SELECT obj AS v1 , sub AS v0 
  	 FROM wsdbm__follows$$1$$
  	
  	) tab0
   JOIN    (SELECT sub AS v1 , obj AS v2 
  	 FROM wsdbm__friendOf$$2$$
  	
  	) tab1
   ON(tab0.v1=tab1.v1)
  
  
  ++++++Tables Statistic
  wsdbm__friendOf$$2$$	1	SO	wsdbm__friendOf/wsdbm__follows
  	VP	<wsdbm__friendOf>	4491142
  	SO	<wsdbm__friendOf><wsdbm__follows>	4100257	0.91
  ------
  wsdbm__follows$$1$$	1	OS	wsdbm__follows/wsdbm__friendOf
  	VP	<wsdbm__follows>	3289307
  	OS	<wsdbm__follows><wsdbm__friendOf>	1316941	0.4
  ------
  