docs: describes variable formatting options

csv option in postgres/mysql docs and the regex option in the
graphite docs

docs/sources/features/datasources/graphite.md

@@ -38,13 +38,13 @@ Proxy access means that the Grafana backend will proxy all requests from the bro
 ## Metric editor
 
 ### Navigate metric segments
+
 Click the ``Select metric`` link to start navigating the metric space. One you start you can continue using the mouse
 or keyboard arrow keys. You can select a wildcard and still continue.
 
 {{< docs-imagebox img="/img/docs/v45/graphite_query1_still.png"
                   animated-gif="/img/docs/v45/graphite_query1.gif" >}}
 
-
 ### Functions
 
 Click the plus icon to the right to add a function. You can search for the function or select it from the menu. Once
@@ -55,7 +55,6 @@ by the x icon.
 {{< docs-imagebox img="/img/docs/v45/graphite_query2_still.png"
                   animated-gif="/img/docs/v45/graphite_query2.gif" >}}
 
-
 ### Optional parameters
 
 Some functions like aliasByNode support an optional second argument. To add this parameter specify for example 3,-2 as the first parameter and the function editor will adapt and move the -2 to a second parameter. To remove the second optional parameter just click on it and leave it blank and the editor will remove it.
@@ -63,7 +62,6 @@ Some functions like aliasByNode support an optional second argument. To add this
 {{< docs-imagebox img="/img/docs/v45/graphite_query3_still.png"
                   animated-gif="/img/docs/v45/graphite_query3.gif" >}}
 
-
 ### Nested Queries
 
 You can reference queries by the row “letter” that they’re on (similar to  Microsoft Excel). If you add a second query to a graph, you can reference the first query simply by typing in #A. This provides an easy and convenient way to build compounded queries.
@@ -71,7 +69,6 @@ You can reference queries by the row “letter” that they’re on (similar to
 {{< docs-imagebox img="/img/docs/v45/graphite_nested_queries_still.png"
                   animated-gif="/img/docs/v45/graphite_nested_queries.gif" >}}
 
-
 ## Point consolidation
 
 All Graphite metrics are consolidated so that Graphite doesn't return more data points than there are pixels in the graph. By default,
@@ -97,7 +94,7 @@ Query | Description
 *tags(server=~backend\*)* | Returns only tags that occur in series matching the filter expression.
 *tag_values(server)*  | Return tag values for the specified tag.
 *tag_values(server, server=~backend*)*  | Returns filtered tag values that occur for the specified tag in series matching those expressions.
-*tag_values(server, server=~backend*, app=$apps)* | Multiple filter expressions and expressions can contain other variables.
+*tag_values(server, server=~backend*, app=${apps:regex})* | Multiple filter expressions and expressions can contain other variables.
 
 For more details, see the [Graphite docs on the autocomplete api for tags](http://graphite.readthedocs.io/en/latest/tags.html#auto-complete-support).
 
@@ -109,14 +106,10 @@ variable with all possible values that exist in the wildcard position.
 You can also create nested variables that use other variables in their definition. For example
 `apps.$app.servers.*` uses the variable `$app` in its query definition.
 
-### Query Variables in Tag Queries
-
-Multi-value variables in tag queries use the syntax introduced in Grafana 5.0 for variables: `{var:regex}`. Non-tag queries will use the default glob formatting for multi-value variables. Checkout the [Advanced Formatting Options section in the Templating]({{< relref "reference/templating.md#advanced-formatting-options" >}}) documentation for examples and details.
-
-### Variable usage
+### Variable Usage
 
 You can use a variable in a metric node path or as a parameter to a function.
-![](/img/docs/v2/templated_variable_parameter.png)
+![variable](/img/docs/v2/templated_variable_parameter.png)
 
 There are two syntaxes:
 
@@ -129,6 +122,10 @@ the second syntax in expressions like  `my.server[[serverNumber]].count`.
 Example:
 [Graphite Templated Dashboard](http://play.grafana.org/dashboard/db/graphite-templated-nested)
 
+### Variable Usage in Tag Queries
+
+Multi-value variables in tag queries use the advanced formatting syntax introduced in Grafana 5.0 for variables: `{var:regex}`. Non-tag queries will use the default glob formatting for multi-value variables. Checkout the [Advanced Formatting Options section in the Variables]({{< relref "reference/templating.md#advanced-formatting-options" >}}) documentation for examples and details.
+
 ## Annotations
 
 [Annotations]({{< relref "reference/annotations.md" >}}) allows you to overlay rich event information on top of graphs. You add annotation

docs/sources/features/datasources/mysql.md

@@ -200,6 +200,14 @@ WHERE $__timeFilter(atimestamp) and hostname in([[hostname]])
 ORDER BY atimestamp ASC
 ```
 
+#### Disabling Quoting for Multi-value Variables
+
+Grafana automatically creates a quoted, comma-separated string for multi-value variables. For example: if `server01` and `server02` are selected then it will be formatted as: `'server01', 'server02'. Do disable quoting, use the csv formatting option for variables:
+
+`${servers:csv}`
+
+Read more about variable formatting options in the [Variables]({{< relref "reference/templating.md#advanced-formatting-options" >}}) documentation.
+
 ## Annotations
 
 [Annotations]({{< relref "reference/annotations.md" >}}) allows you to overlay rich event information on top of graphs. You add annotation queries via the Dashboard menu / Annotations view.
@@ -242,4 +250,4 @@ datasources:
     database: grafana
     user: grafana
     password: password
-```
+```

docs/sources/features/datasources/postgres.md

@@ -82,7 +82,7 @@ You can control the name of the Table panel columns by using regular `as ` SQL c
 
 The resulting table panel:
 
-![](/img/docs/v46/postgres_table.png)
+![postgres table](/img/docs/v46/postgres_table.png)
 
 ### Time series queries
 
@@ -190,6 +190,14 @@ WHERE $__timeFilter(atimestamp) and hostname in([[hostname]])
 ORDER BY atimestamp ASC
 ```
 
+#### Disabling Quoting for Multi-value Variables
+
+Grafana automatically creates a quoted, comma-separated string for multi-value variables. For example: if `server01` and `server02` are selected then it will be formatted as: `'server01', 'server02'. Do disable quoting, use the csv formatting option for variables:
+
+`${servers:csv}`
+
+Read more about variable formatting options in the [Variables]({{< relref "reference/templating.md#advanced-formatting-options" >}}) documentation.
+
 ## Annotations
 
 [Annotations]({{< relref "reference/annotations.md" >}}) allow you to overlay rich event information on top of graphs. You add annotation queries via the Dashboard menu / Annotations view.
@@ -218,9 +226,9 @@ tags | Optional field name to use for event tags as a comma separated string.
 Time series queries should work in alerting conditions. Table formatted queries is not yet supported in alert rule
 conditions.
 
-## Configure datasource with provisioning
+## Configure the Datasource with Provisioning
 
-It's now possible to configure datasources using config files with Grafanas provisioning system. You can read more about how it works and all the settings you can set for datasources on the [provisioning docs page](/administration/provisioning/#datasources)
+It's now possible to configure datasources using config files with Grafana's provisioning system. You can read more about how it works and all the settings you can set for datasources on the [provisioning docs page](/administration/provisioning/#datasources)
 
 Here are some provisioning examples for this datasource.
 
@@ -237,5 +245,4 @@ datasources:
       password: "Password!"
     jsonData:
       sslmode: "disable" # disable/require/verify-ca/verify-full
-
-```
+```

docs/sources/reference/templating.md

@@ -38,7 +38,7 @@ documentation article for details on value escaping during interpolation.
 
 ### Advanced Formatting Options
 
-In Grafana 5.0, an additional option was added to control the formatting of the interpolation.
+In Grafana 5.0, a new syntax for variables was introduced to control the formatting of the interpolation.
 
 Syntax: `${var_name:option}`