DescribeQuery (children 1)
 TableExpression (children 1)
  Subquery (children 1)
   SelectWithUnionQuery (children 1)
    ExpressionList (children 1)
     SelectQuery (children 1)
      ExpressionList (children 5)
       Function plus (children 1)
        ExpressionList (children 2)
         Literal UInt64_1 (alias a)
         Identifier a (alias b)
       Function plus (children 1)
        ExpressionList (children 2)
         Identifier b
         Identifier b
       Function plus (alias c) (children 1)
        ExpressionList (children 2)
         Identifier b
         Identifier b
       Function concat (alias e) (children 1)
        ExpressionList (children 2)
         Literal \'Value\' (alias d)
         Identifier d
       Identifier e