Easily upload your own data to Dune This feature allows you to upload any csv file to Dune and query it like any other table in Dune. Currently, the we only supports uploading CSV files with a maximum size of 200 MB. The app will return an error if the file size exceeds this limit.
Additionally, column names in the table can’t start with a special character or digits. The files you upload will be queryable via the schema dune.team_name.dataset_name. For example, if you upload a file called energy_data.csv to the team dune and name the dataset energy_data, you will be able to query the data via dune.dune.energy_data. You’ll be able to query for your data in any query. 
Select * from dune.dune.dataset_energy_data
All data uploaded is public and can be accessed by anyone.
Private data uploads are available only on the premium plan.
You can also upload data via the API. Check out the API documentation for more information.
  1. Click on the “Upload Data” button in the menu of the Dune UI.
  2. Select the csv file you want to upload.
  3. Name your table and add a description.
  4. Click on save to finish the upload.

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Querying for the data in Dune

Once the data has been uploaded, you can explore it in the my data section in the data explorer: upload data You can query for your data in any query. 
Select * from dune.dune.dataset_energy_data
To check whether the datatypes are correctly inferred, you can check the table details in the data explorer.

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Updating data

Currently there is no way to update the data of an already existing .csv file. However, you can use the “query a query” feature to query multiple .csv files at once. For example: 
--query_2441513

Select * from dune.dune.dataset_energy_data_1

UNION ALL

Select * from dune.dune.dataset_energy_data_2

-- add more as it becomes relevant
In your main query, you could then simply refer to this query. 
Select * from ethereum.transactions t
left join query_2441513 q on q.address = t."from"

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Private data

If you don’t want to share your data with the world, you can also upload private data. Private data is only visible to you and your team members. To upload private data, you need to be on the premium plan. If you are on the premium plan, you can upload private data by toggling the “make table private” switch in the upload data modal. You can also change the privacy settings of a dataset after it has been uploaded. To do so, go to settings -> data page and click on the three dots next to the dataset you want to change the privacy settings for. Then click on “make table private” to make the table private or “make table public” to make it public.

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Deleting data

You can delete your data via your settings page.
  1. Click on the “settings” button in the menu of the Dune UI.
  2. Click on “data”.
  3. Find the dataset you want to delete.
  4. Click on the three dots to open the options for the dataset.
  5. Click on “delete dataset”.
  6. confirm the deletion.
  7. The dataset is now deleted.

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Large Amounts of Data

If you want to share valuable off-chain data on Dune with your community, we are happy to discuss custom arrangements. Please reach indicate your interest via this form. This is only applicable for datasets with positive externalities for the Dune community. Examples include: