## Bug report
### Describe the bug
Here is a clear and concise description of …what the problem is:
Calling AudioLibrary.GetArtists with "albumartistsonly": false returns "isalbumartist": false for most artists when the request properties don't contain "songgenres", while (many of) the artists in fact -are- album artists.
When calling the same request but adding property "songgenres" the returned "isalbumartist" properties are correct
## Expected Behavior
Here is a clear and concise description of what was expected to happen:
I expect AudioLibrary.GetArtists to always return the same (correct) values for "isalbumartist", so true if they are album arists, and false if they arent, regarless of whether I also request "songgenres"
## Actual Behavior
AudioLibrary.GetArtists returns incorrect (false negative, and probably also false positives) "isalbumartist" values when you don't request "songgenres"
## Possible Fix
From the debug log I notice that when genre and songgenres are ommitted, the resulting query looks like
`SELECT
a1.*,
isSong,
art.art_id AS idArt,
art.type AS artType,
art.url AS artURL [.....] GROUP BY
a1.idArtist,
art.art_id
ORDER BY
a1.idArtist,
isSong,
arttype`
that is, "isSong" is not in the `GROUP BY`, while I believe it should be, because both the records where isSong = 0 and isSong = 1 should be included in the result.
This is not a problem when "songgenres" are also requested, because in that case
`idSongGenreAlbum, idSongGenreSong,`
appears in the GROUP BY, making (by accident) the correct distinct isSong fields to appear.
### To Reproduce
Steps to reproduce the behavior:
1. Call the JSON-RPC API with
<pre>
{
"jsonrpc": "2.0",
"method": "AudioLibrary.GetArtists",
"params": {
"albumartistsonly": false,
"properties": [
"style",
"description",
"born",
"died",
"thumbnail",
"instrument",
"fanart",
"type",
"gender",
"isalbumartist",
"sortname"
],
"limits": { "start": 0, "end": 1000 }
},
"id": 1
}
</pre>
2. See that the result contains artists with property "isalbumartist":false, where they actually -are- album artists. this is the wrong behavior
3. Now do the same request, only adding extra "songgenres" property:
<pre>
{
"jsonrpc": "2.0",
"method": "AudioLibrary.GetArtists",
"params": {
"albumartistsonly": false,
"properties": [
"style",
"description",
"born",
"died",
"thumbnail",
"instrument",
"fanart",
"type",
"gender",
"isalbumartist",
"sortname",
"songgenres"
],
"limits": { "start": 0, "end": 1000 }
},
"id": 1
}
</pre>
4. See that in the result "isalbumartist" is true (correct) for artists where it was false in the previous request
### Debuglog
The debuglog can be found here:
https://pastebin.com/Z1NS5DnA
### Screenshots
Here are some links or screenshots to help explain the problem:
## Additional context or screenshots (if appropriate)
Here is some additional context or explanation that might help:
### Your Environment
Used Operating system:
- [ ] Android
- [ ] iOS
- [ ] Linux
- [ ] OSX
- [x] Raspberry-Pi
- [x] Windows
- [ ] Windows UWP
- Operating system version/name:
- Kodi version: 18.6
Not sure if relevant, but I'm using MySQL database
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Team Kodi will consider your problem report however, we will not make any promises the problem will be solved.*
