SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function s3 (children 1)
       ExpressionList (children 2)
        Literal \'https://clickhouse-public-datasets.s3.amazonaws.com/wikistat/original/*\'
        Identifier NOSIGN
   Literal UInt64_1
 Identifier Null
