<commit_before># Changelog

## v1.0.0-beta4 [unreleased]

### Release Notes

#### Group By Fields

Kapacitor now supports grouping by fields.
First convert a field into a tag using the EvalNode.
Then group by the new tag.

Example:

```go
stream
    |from()
        .measurement('alerts')
    // Convert field 'level' to tag.
    |eval(lambda: string("level"))
        .as('level')
        .tags('level')
    // Group by new tag 'level'.
    |groupBy('alert', 'level')
    |...
```

Note the field `level` is now removed from the point since `.keep` was not used.
See the [docs](https://docs.influxdata.com/kapacitor/v1.0/nodes/eval_node/#tags) for more details on how `.tags` works.


#### Delete Fields or Tags
<commit_msg>update changelog for 1.0.0-beta4 release<commit_after># Changelog

## v1.0.0-beta5 [unreleased]

### Release Notes

### Features

### Bugfixes


## v1.0.0-beta4 [2016-07-27]

### Release Notes

#### Group By Fields

Kapacitor now supports grouping by fields.
First convert a field into a tag using the EvalNode.
Then group by the new tag.

Example:

```go
stream
    |from()
        .measurement('alerts')
    // Convert field 'level' to tag.
    |eval(lambda: string("level"))
        .as('level')
        .tags('level')
    // Group by new tag 'level'.
    |groupBy('alert', 'level')
    |...
```

Note the field `level` is now removed from the point since `.keep` was not used.
See the [docs](https://docs.influxdata.com/kapacitor/v1.0/nodes/eval_node/#tags) for more details on how `.tags` works.


#### Delete Fields or Tags

{'fraction_non_alphanumeric': 0.14983922829581994, 'fraction_numerical': 0.0180064308681672, 'mean_word_length': 3.0520833333333335, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 2, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4685140', 'n_tokens_mistral': 539, 'n_tokens_neox': 517, 'n_words': 172}