InsertQuery   (children 3)
 Function file (children 1)
  ExpressionList (children 1)
   Identifier 02376_data.arrow
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Function toLowCardinality (alias x) (children 1)
      ExpressionList (children 1)
       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
    Set
 Set