SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Literal NULL
   ExpressionList (children 2)
    Function tuple (children 1)
     ExpressionList (children 1)
      Literal \'0.0000000007\'
    Function count (children 1)
     ExpressionList (children 1)
      Literal NULL
