Hi @yli_2596, I am assuming you are referring to the data in the underlying architecture, and for that, there's currently not an easy way to delete data. A few options you can explore are:
- Creating a dataflow to input your dataset, filter out the rows you don't want and then write it out to another dataset,
- Temporarily using the replace method and then go back to your append method (using the ETL tiles),
- Requesting certain rows to be deleted via Domo Support
In theory you could utilize a webform or some other dataset with a dataset ID column and another column which would contain the number of days you wish to keep data in your dataset for. You can then utilize a Recursive Magic ETL dataflow to then filter the data down to the values that are within the number you specified and write it back out to your original dataset.
Here's some more information about recursive dataflows: https://domohelp.domo.com/hc/en-us/articles/360057087393-Creating-a-Recursive-Snapshot-DataFlow-in-the-New-Magic-ETL