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Loki: Add support for ad-hoc filtering in dashboard (#36393)

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* Add support for ad-hoc filtering in dashboards

* Add tests

* Add documentation

* Update docs/sources/variables/variable-types/add-ad-hoc-filters.md

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>

* Remove unused import

* Refactor and simplify

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
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Ivana Huckova
2021-07-06 04:30:27 -04:00
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commit b77f6d59bd
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docs/sources/variables/variable-types/add-ad-hoc-filters.md
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@ -8,7 +8,7 @@ weight = 700
_Ad hoc filters_ allow you to add key/value filters that are automatically added to all metric queries that use the specified data source. Unlike other variables, you do not use ad hoc filters in queries. Instead, you use ad hoc filters to write filters for existing queries.
> **Note:** Ad hoc filter variables only work with InfluxDB, Prometheus, and Elasticsearch data sources.
> **Note:** Ad hoc filter variables only work with Prometheus, Loki, InfluxDB, and Elasticsearch data sources.
## Enter General options
@ -29,4 +29,4 @@ _Ad hoc filters_ allow you to add key/value filters that are automatically added
## Create ad hoc filters
Ad hoc filters are one of the most complex and flexible variable options available. Instead of a regular list of variable options, this variable allows you to build a dashboard-wide ad hoc query. Filters you apply in this manner are applied to all panels on the dashboard.
Ad hoc filters are one of the most complex and flexible variable options available. Instead of a regular list of variable options, this variable allows you to build a dashboard-wide ad hoc query. Filters you apply in this manner are applied to all panels on the dashboard.