Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 4)
     Function sum (children 1)
      ExpressionList (children 1)
       Function multiply (children 1)
        ExpressionList (children 2)
         Identifier n
         Literal UInt64_2
     Function sum (children 1)
      ExpressionList (children 1)
       Function multiply (children 1)
        ExpressionList (children 2)
         Literal UInt64_2
         Identifier n
     Function sum (children 1)
      ExpressionList (children 1)
       Function divide (children 1)
        ExpressionList (children 2)
         Identifier n
         Literal UInt64_2
     Function sum (children 1)
      ExpressionList (children 1)
       Function divide (children 1)
        ExpressionList (children 2)
         Literal UInt64_1
         Identifier n
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Subquery (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectQuery (children 2)
           ExpressionList (children 1)
            Identifier number (alias n)
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              Function numbers (children 1)
               ExpressionList (children 1)
                Literal UInt64_10
