I want to search questions whose duplicates list has been edited. Take this question as an example:

Timeline of the question

The timeline shows that the type of "duplicates list edited" is history, but the list edit history can not be found in the public data dump, nor in SEDE.

My simple query code in SEDE:

FROM posthistory as ph
where ph.PostId = 7558022

The result does not contain "duplicates list edited":

result of query

So how can I get the "duplicates list edited" history?

  • 1
    It's really interesting the Dupe List Edit event is either apparently not stored as a PostHistory event, or purged from the dataset. I'd probably lean towards the former as the cause, but I'd love to here an official explanation.
    – zcoop98
    Apr 8, 2021 at 16:53

1 Answer 1


This information does not seem to be included in SEDE. However, if all you want is

to search questions whose duplicates list has been edited

then the following stub may help you. The PostLinks table contains information about the current duplicate(s), while the most recent PostHistory entry with type 10 contains the initial duplicate list. (It can be a list if users provided different duplicate targets during the initial closure.)

  • I still slightly confused why the history "duplicates list edited" is an exception. Hope it will be included in later versions. Thanks a lot for your Answer! Apr 8, 2021 at 13:47

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .