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 plus (children 1)
              ExpressionList (children 2)
               Identifier n
               Literal UInt64_1
           Function max (children 1)
            ExpressionList (children 1)
             Function plus (children 1)
              ExpressionList (children 2)
               Literal UInt64_1
               Identifier n
         Function max (children 1)
          ExpressionList (children 1)
           Function minus (children 1)
            ExpressionList (children 2)
             Identifier n
             Literal UInt64_1
       Function max (children 1)
        ExpressionList (children 1)
         Function minus (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
