SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 5)
    Literal Float64_nan (alias value)
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier value
      Identifier value
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier value
      Function materialize (children 1)
       ExpressionList (children 1)
        Identifier value
    Function equals (children 1)
     ExpressionList (children 2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Identifier value
      Identifier value
    Function equals (children 1)
     ExpressionList (children 2)
      Function materialize (children 1)
       ExpressionList (children 1)
        Identifier value
      Function materialize (children 1)
       ExpressionList (children 1)
        Identifier value
