SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier number
    Function neighbor (children 1)
     ExpressionList (children 3)
      Literal \'ClickHouse\'
      Literal UInt64_5
      Function concat (children 1)
       ExpressionList (children 2)
        Literal \'Hello \'
        Function toString (children 1)
         ExpressionList (children 1)
          Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10