Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 4)
     Function max (children 1)
      ExpressionList (children 1)
       Function multiply (children 1)
        ExpressionList (children 2)
         Function abs (children 1)
          ExpressionList (children 1)
           Identifier n
         Literal UInt64_2
     Function max (children 1)
      ExpressionList (children 1)
       Function multiply (children 1)
        ExpressionList (children 2)
         Function abs (children 1)
          ExpressionList (children 1)
           Identifier n
         Identifier n
     Function max (children 1)
      ExpressionList (children 1)
       Function divide (children 1)
        ExpressionList (children 2)
         Identifier n
         Function abs (children 1)
          ExpressionList (children 1)
           Identifier n
     Function max (children 1)
      ExpressionList (children 1)
       Function divide (children 1)
        ExpressionList (children 2)
         Literal UInt64_1
         Function abs (children 1)
          ExpressionList (children 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
