Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function plus (children 1)
      ExpressionList (children 2)
       Function plus (children 1)
        ExpressionList (children 2)
         Function plus (children 1)
          ExpressionList (children 2)
           Function max (children 1)
            ExpressionList (children 1)
             Function multiply (children 1)
              ExpressionList (children 2)
               Identifier n
               Literal UInt64_2
           Function max (children 1)
            ExpressionList (children 1)
             Function multiply (children 1)
              ExpressionList (children 2)
               Literal UInt64_2
               Identifier n
         Function max (children 1)
          ExpressionList (children 1)
           Function divide (children 1)
            ExpressionList (children 2)
             Identifier n
             Literal UInt64_2
       Function max (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
