html_url,issue_url,id,node_id,user,user_label,created_at,updated_at,author_association,body,reactions,issue,issue_label,performed_via_github_app
https://github.com/simonw/datasette/issues/292#issuecomment-392350980,https://api.github.com/repos/simonw/datasette/issues/292,392350980,MDEyOklzc3VlQ29tbWVudDM5MjM1MDk4MA==,9599,simonw,2018-05-27T17:56:30Z,2018-05-27T17:56:50Z,OWNER,"Should `?_raw=1` also turn off foreign key expansions? No, we will eventually provide a separate mechanism for that (or leave it to nerds who care to figure out using JSON or CSV export).","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392350568,https://api.github.com/repos/simonw/datasette/issues/292,392350568,MDEyOklzc3VlQ29tbWVudDM5MjM1MDU2OA==,9599,simonw,2018-05-27T17:48:45Z,2018-05-27T17:54:41Z,OWNER,"If any `?_column=` parameters are provided the metadata version is completely ignored.
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392350495,https://api.github.com/repos/simonw/datasette/issues/292,392350495,MDEyOklzc3VlQ29tbWVudDM5MjM1MDQ5NQ==,9599,simonw,2018-05-27T17:47:31Z,2018-05-27T17:47:31Z,OWNER,"Querystring design:
* `?_column=a&_column=b` - equivalent of `""columns"": [""a"", ""b""]` in `metadata.json`
* `?_select_nameupper=upper(name)` - equivalent of `""column_selects"": {""nameupper"": ""upper(name)""}`","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392345062,https://api.github.com/repos/simonw/datasette/issues/292,392345062,MDEyOklzc3VlQ29tbWVudDM5MjM0NTA2Mg==,9599,simonw,2018-05-27T16:26:53Z,2018-05-27T16:26:53Z,OWNER,There needs to be a way to turn this off and return to Datasette default bahviour. Maybe a `?_raw=1` querystring parameter for the table view.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392343690,https://api.github.com/repos/simonw/datasette/issues/292,392343690,MDEyOklzc3VlQ29tbWVudDM5MjM0MzY5MA==,9599,simonw,2018-05-27T16:08:25Z,2018-05-27T16:08:40Z,OWNER,"Turns out it's actually possible to pull data from other tables using the mechanism in the prototype:
```
{
""databases"": {
""wtr"": {
""tables"": {
""license"": {
""column_selects"": {
""count"": ""(select count(*) from license_frequency where license_frequency.license = license.id)""
}
}
}
}
}
}
```
Performance using this technique is pretty terrible though:
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392342947,https://api.github.com/repos/simonw/datasette/issues/292,392342947,MDEyOklzc3VlQ29tbWVudDM5MjM0Mjk0Nw==,9599,simonw,2018-05-27T16:01:43Z,2018-05-27T16:01:43Z,OWNER,I'd still like to be able to over-ride this using querystring arguments.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392342269,https://api.github.com/repos/simonw/datasette/issues/292,392342269,MDEyOklzc3VlQ29tbWVudDM5MjM0MjI2OQ==,9599,simonw,2018-05-27T15:55:40Z,2018-05-27T16:01:26Z,OWNER,"Here's the metadata I tried against that first working prototype:
```
{
""databases"": {
""timezones"": {
""tables"": {
""timezones"": {
""columns"": [""PK_UID""],
""column_selects"": {
""upper_tzid"": ""upper(tzid)"",
""Geometry"": ""AsGeoJSON(Geometry)""
}
}
}
},
""wtr"": {
""tables"": {
""license_frequency"": {
""columns"": [""id"", ""license"", ""tx_rx"", ""frequency""],
""column_selects"": {
""latitude"": ""Y(Geometry)"",
""longitude"": ""X(Geometry)""
}
}
}
}
}
}
```
Run using this:
datasette timezones.db wtr.db \
--reload --debug --load-extension=/usr/local/lib/mod_spatialite.dylib \
-m column-metadata.json --config sql_time_limit_ms:10000
Usefully, the `--reload` flag detects changes to the `metadata.json` file as well as Datasette's own Python code.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392338130,https://api.github.com/repos/simonw/datasette/issues/292,392338130,MDEyOklzc3VlQ29tbWVudDM5MjMzODEzMA==,9599,simonw,2018-05-27T15:09:18Z,2018-05-27T15:09:28Z,OWNER,"Here's my first sketch at a metadata format for this:
* `columns`: optional list of columns to include - if missing, shows all
* `column_selects`: dictionary mapping column names to alternative select clauses
`column_selects` can also invent new keys and use them to create derived columns. These new keys will be selected at the end of the list of columns UNLESS they are mentioned in `columns`, in which case that sequence will define the order.
Can you facet by things that are customized using `column_selects`? Yes, and let's try running suggested facets against those columns as well.
```
{
""databases"": {
""databasename"": {
""tables"": {
""tablename"": {
""columns"": [
""id"", ""name"", ""size""
],
""column_selects"": {
""name"": ""upper(name)"",
""geo_json"": ""AsGeoJSON(Geometry)""
}
""row_columns"": [...]
""row_column_selects"": {...}
}
```
The `row_columns` and `row_column_selects` properties work the same as the `column*` ones, except they are applied on the row page instead.
If omitted, the `column*` ones will be used on the row page as well.
If you want the row page to switch back to Datasette's default behaviour you can set `""row_columns"": [], ""row_column_selects"": {}`.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392316701,https://api.github.com/repos/simonw/datasette/issues/292,392316701,MDEyOklzc3VlQ29tbWVudDM5MjMxNjcwMQ==,9599,simonw,2018-05-27T09:08:49Z,2018-05-27T09:08:49Z,OWNER,I could certainly see people wanting different custom column selects for the row page compared to the table page.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,
https://github.com/simonw/datasette/issues/292#issuecomment-392316673,https://api.github.com/repos/simonw/datasette/issues/292,392316673,MDEyOklzc3VlQ29tbWVudDM5MjMxNjY3Mw==,9599,simonw,2018-05-27T09:08:06Z,2018-05-27T09:08:06Z,OWNER,Open question: how should this affect the row page? Just because columns were hidden on the table page doesn't necessarily mean they should be hidden on the row page as well. ,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",326800219,Mechanism for customizing the SQL used to select specific columns in the table view,