html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/datasette/issues/1836#issuecomment-1272344884,https://api.github.com/repos/simonw/datasette/issues/1836,1272344884,IC_kwDOBm6k_c5L1nE0,9599,2022-10-08T15:41:28Z,2022-10-08T15:41:28Z,OWNER,"Lets switch to `mode=ro` when the `inspect` command runs, we can use this issue for that.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1400374908,
https://github.com/simonw/datasette/issues/1836#issuecomment-1271006020,https://api.github.com/repos/simonw/datasette/issues/1836,1271006020,IC_kwDOBm6k_c5LwgNE,9599,2022-10-07T01:54:07Z,2022-10-07T01:54:07Z,OWNER,Just overlapped with your comment here: https://github.com/simonw/datasette/issues/1836#issuecomment-1271003212 - which notes that opening with `?immutable=1` DOES seem to cause the file to be duplicated!,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1400374908,
https://github.com/simonw/datasette/issues/1836#issuecomment-1271004167,https://api.github.com/repos/simonw/datasette/issues/1836,1271004167,IC_kwDOBm6k_c5LwfwH,9599,2022-10-07T01:53:05Z,2022-10-07T01:53:05Z,OWNER,"Oh this is interesting!

Is your hunch here that running this line is causing the file to be stored as a second layer?

https://github.com/simonw/datasette/blob/5aa359b86907d11b3ee601510775a85a90224da8/datasette/utils/__init__.py#L399

I guess it's possible that running a non-read-only query against the database causes one or two bytes to be changed (maybe a transaction ID or similar?)

Modifying the `inspect` command to use `?mode=ro` seems sensible to me. Except.... it should already be opening those files in immutable mode according to this line: https://github.com/simonw/datasette/blob/eff112498ecc499323c26612d707908831446d25/datasette/cli.py#L172-L173

Here's what opening as a `immutables` does:

https://github.com/simonw/datasette/blob/eff112498ecc499323c26612d707908831446d25/datasette/app.py#L258-L260

https://github.com/simonw/datasette/blob/eff112498ecc499323c26612d707908831446d25/datasette/database.py#L98

","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1400374908,