InsertQuery   (children 2)
 Identifier aggr
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 1)
    ExpressionList (children 2)
     Literal UInt64_3
     Function maxState (children 1)
      ExpressionList (children 1)
       Literal \'\\0\\0\\0\\0\'
