SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function round (children 1)
     ExpressionList (children 2)
      Function L2DistanceTransposed (children 1)
       ExpressionList (children 3)
        Function CAST (children 1)
         ExpressionList (children 2)
          Literal \'\'
          Literal \'FixedString(1)\'
        Literal UInt64_3
        Function CAST (children 1)
         ExpressionList (children 2)
          Function materialize (children 1)
           ExpressionList (children 1)
            Literal Array_[UInt64_1, UInt64_2, UInt64_3]
          Literal \'Array(Float32)\'
      Literal UInt64_5
