InsertQuery   (children 2)
 Identifier test
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 3)
     Function toString (alias c1) (children 1)
      ExpressionList (children 1)
       Identifier number
     Identifier c1 (alias c2)
     Identifier number (alias c3)
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_2
