SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function equals (children 1)
     ExpressionList (children 2)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function toDate (children 1)
            ExpressionList (children 1)
             Literal \'2015-01-02\'
      Function toDate (children 1)
       ExpressionList (children 1)
        Literal \'2015-01-02\'
    Function equals (children 1)
     ExpressionList (children 2)
      Literal \'Hello\'
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal \'Hello\'