If someone executes 'select * from table' against a table with a million rows
in it, we could run into problems: just serializing that much data as JSON is
likely to lock up the server.
Solution: we now have a hard limit on the maximum number of rows that can be
returned by a query. If that limit is exceeded, the server will return a
`"truncated": true` field in the JSON.
This limit can be optionally controlled by the new `--max_returned_rows`
option. Setting that option to 0 disables the limit entirely.
Closes#69
If provided, the --metadata option is the path to a JSON file containing
metadata that should be displayed alongside the dataset.
datasette /tmp/fivethirtyeight.db --metadata /tmp/metadata.json
Currently that metadata format looks like this:
{
"title": "Five Thirty Eight",
"license": "CC Attribution 4.0 License",
"license_url": "http://creativecommons.org/licenses/by/4.0/",
"source": "fivethirtyeight/data on GitHub",
"source_url": "https://github.com/fivethirtyeight/data"
}
If provided, this will be used by the index template and to populate the
common footer.
The publish command also accepts this argument, and will package any provided
metadata up and include it with the resulting Docker container.
datasette publish --metadata /tmp/metadata.json /tmp/fivethirtyeight.db
Closes#68
