docs: elasticsearch and influxdb docs for group by time interval option (#11609)

docs/sources/features/datasources/elasticsearch.md

@@ -55,6 +55,22 @@ a time pattern for the index name or a wildcard.
 Be sure to specify your Elasticsearch version in the version selection dropdown. This is very important as there are differences how queries are composed. Currently only 2.x and 5.x
 are supported.
 
+### Min time interval
+A lower limit for the auto group by time interval. Recommended to be set to write frequency, for example `1m` if your data is written every minute.
+This option can also be overridden/configured in a dashboard panel under data source options. It's important to note that this value **needs** to be formated as a
+number followed by a valid time identifier, e.g. `1m` (1 minute) or `30s` (30 seconds). The following time identifiers are supported:
+
+Identifier | Description
+------------ | -------------
+`y`   | year
+`M`   | month
+`w`   | week
+`d`   | day
+`h`   | hour
+`m`   | minute
+`s`   | second
+`ms`  | millisecond
+
 ## Metric Query editor
 
 ![](/img/docs/elasticsearch/query_editor.png)

docs/sources/features/datasources/influxdb.md

@@ -39,6 +39,22 @@ Proxy access means that the Grafana backend will proxy all requests from the bro
 `grafana-server`. This means that the URL you specify needs to be accessible from the server you are running Grafana on. Proxy access
 mode is also more secure as the username & password will never reach the browser.
 
+### Min time interval
+A lower limit for the auto group by time interval. Recommended to be set to write frequency, for example `1m` if your data is written every minute.
+This option can also be overridden/configured in a dashboard panel under data source options. It's important to note that this value **needs** to be formated as a
+number followed by a valid time identifier, e.g. `1m` (1 minute) or `30s` (30 seconds). The following time identifiers are supported:
+
+Identifier | Description
+------------ | -------------
+`y`   | year
+`M`   | month
+`w`   | week
+`d`   | day
+`h`   | hour
+`m`   | minute
+`s`   | second
+`ms`  | millisecond
+
 ## Query Editor
 
 {{< docs-imagebox img="/img/docs/v45/influxdb_query_still.png" class="docs-image--no-shadow" animated-gif="/img/docs/v45/influxdb_query.gif" >}}

public/app/plugins/datasource/elasticsearch/partials/config.html

@@ -35,7 +35,7 @@
     </div>
 	<div class="gf-form-inline">
 		<div class="gf-form">
-			<span class="gf-form-label width-9">Min interval</span>
+			<span class="gf-form-label width-9">Min time interval</span>
 			<input type="text" class="gf-form-input width-6" ng-model="ctrl.current.jsonData.timeInterval" spellcheck='false' placeholder="10s"></input>
 			<info-popover mode="right-absolute">
 				A lower limit for the auto group by time interval. Recommended to be set to write frequency,

public/app/plugins/datasource/influxdb/query_help.md

@@ -10,7 +10,7 @@
 - When stacking is enabled it is important that points align
 - If there are missing points for one series it can cause gaps or missing bars
 - You must use fill(0), and select a group by time low limit
-- Use the group by time option below your queries and specify for example >10s if your metrics are written every 10 seconds
+- Use the group by time option below your queries and specify for example 10s if your metrics are written every 10 seconds
 - This will insert zeros for series that are missing measurements and will make stacking work properly
 
 #### Group by time
@@ -18,8 +18,7 @@
 - Leave the group by time field empty for each query and it will be calculated based on time range and pixel width of the graph
 - If you use fill(0) or fill(null) set a low limit for the auto group by time interval
 - The low limit can only be set in the group by time option below your queries
-- You set a low limit by adding a greater sign before the interval
+- Example: 60s if you write metrics to InfluxDB every 60 seconds
-- Example: >60s if you write metrics to InfluxDB every 60 seconds
 
 #### Documentation links: