InsertQuery   (children 2)
 Identifier summing_merge_tree_datetime64
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 1)
    ExpressionList (children 3)
     Literal UInt64_1 (alias pk)
     Literal \'2023-05-01 23:55:55.100\' (alias timestamp)
     Literal UInt64_5 (alias value)
