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Document inverse=true for TopN

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Alan Bernstein 2017-05-30 11:35:01 -05:00
parent 03aeb64e11
commit 87475220bc
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15
docs/query-language.md
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@ -326,12 +326,13 @@ Return `2`
```
TopN([BITMAP_CALL], <frame=STRING>, [n=UINT],
[<field=ATTR_NAME>, <filters=[]ATTR_VALUE>])
[inverse=true], [<field=ATTR_NAME>, <filters=[]ATTR_VALUE>])
```
**Description:**
Return the id and count of the top `n` bitmaps (by count of bits) in the frame.
`inverse=true` specifies that the call should operate on the [inverse view ](../data-model/#inverse).
The `field` and `filters` arguments work together to only return Bitmaps which
have the attribute specified by `field` with one of the values specified in
`filters`.
@ -346,10 +347,20 @@ TopN(frame="stargazer")
Returns `[{"key": 1, "count": 2}, {"key": 2, "count": 2}, {"key": 3, "count": 1}]`
* key is a user
* key is a user ID
* count is amount of repositories
* Results are the number of repositories that each user starred in descending order for all users in the stargazer frame, for example user 1 starred two repositories, user 2 starred two repositories, user 3 starred one repository.
```
TopN(frame="stargazer", inverse=true)
```
Returns `[{"key": 1, "count": 2}, {"key": 2, "count": 2}, {"key": 3, "count": 1}]`
* key is a repository ID
* count is amount of users
* Results are the number of user that starred each repository in descending order for all respositories in the stargazer frame.
```
TopN(frame="stargazer", n=2)
```