SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 6)
    Function plus (children 1)
     ExpressionList (children 2)
      Literal UInt64_1
      Literal Float64_nan
    Function minus (children 1)
     ExpressionList (children 2)
      Literal UInt64_1
      Literal Float64_nan
    Function minus (children 1)
     ExpressionList (children 2)
      Literal Float64_nan
      Literal UInt64_1
    Function multiply (children 1)
     ExpressionList (children 2)
      Literal UInt64_1
      Literal Float64_nan
    Function divide (children 1)
     ExpressionList (children 2)
      Literal UInt64_1
      Literal Float64_nan
    Function divide (children 1)
     ExpressionList (children 2)
      Literal Float64_nan
      Literal UInt64_1