InsertQuery   (children 3)
 Function file (children 1)
  ExpressionList (children 1)
   Function concat (children 1)
    ExpressionList (children 2)
     Function currentDatabase (children 1)
      ExpressionList
     Literal \'_data_02304.parquet\'
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Literal \'hello\' (alias s)
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_3
    Set
 Set
