id,page,ref,title,content,breadcrumbs,references
changelog:control-http-caching-with-ttl,changelog,control-http-caching-with-ttl,Control HTTP caching with ?_ttl=,"You can now customize the HTTP max-age header that is sent on a per-URL basis, using the new  ?_ttl=  query string parameter. 
                 You can set this to any value in seconds, or you can set it to 0 to disable HTTP caching entirely. 
                 Consider for example this query which returns a randomly selected member of the Avengers: 
                 select * from [avengers/avengers] order by random() limit 1 
                 If you hit the following page repeatedly you will get the same result, due to HTTP caching: 
                 /fivethirtyeight?sql=select+*+from+%5Bavengers%2Favengers%5D+order+by+random%28%29+limit+1 
                 By adding  ?_ttl=0  to the zero you can ensure the page will not be cached and get back a different super hero every time: 
                 /fivethirtyeight?sql=select+*+from+%5Bavengers%2Favengers%5D+order+by+random%28%29+limit+1&_ttl=0","[""Changelog"", ""0.23 (2018-06-18)""]","[{""href"": ""https://fivethirtyeight.datasettes.com/fivethirtyeight?sql=select+*+from+%5Bavengers%2Favengers%5D+order+by+random%28%29+limit+1"", ""label"": ""/fivethirtyeight?sql=select+*+from+%5Bavengers%2Favengers%5D+order+by+random%28%29+limit+1""}, {""href"": ""https://fivethirtyeight.datasettes.com/fivethirtyeight?sql=select+*+from+%5Bavengers%2Favengers%5D+order+by+random%28%29+limit+1&_ttl=0"", ""label"": ""/fivethirtyeight?sql=select+*+from+%5Bavengers%2Favengers%5D+order+by+random%28%29+limit+1&_ttl=0""}]"
changelog:csv-export,changelog,csv-export,CSV export,"Any Datasette table, view or custom SQL query can now be exported as CSV. 
                 
                 Check out the  CSV export documentation  for more details, or
                    try the feature out on
                     https://fivethirtyeight.datasettes.com/fivethirtyeight/bechdel%2Fmovies 
                 If your table has more than  max_returned_rows  (default 1,000)
                    Datasette provides the option to  stream all rows . This option takes advantage
                    of async Python and Datasette's efficient  pagination  to
                    iterate through the entire matching result set and stream it back as a
                    downloadable CSV file.","[""Changelog"", ""0.23 (2018-06-18)""]","[{""href"": ""https://fivethirtyeight.datasettes.com/fivethirtyeight/bechdel%2Fmovies"", ""label"": ""https://fivethirtyeight.datasettes.com/fivethirtyeight/bechdel%2Fmovies""}]"
changelog:foreign-key-expansions,changelog,foreign-key-expansions,Foreign key expansions,"When Datasette detects a foreign key reference it attempts to resolve a label
                    for that reference (automatically or using the  Specifying the label column for a table  metadata
                    option) so it can display a link to the associated row. 
                 This expansion is now also available for JSON and CSV representations of the
                    table, using the new  _labels=on  query string option. See
                     Expanding foreign key references  for more details.","[""Changelog"", ""0.23 (2018-06-18)""]",[]