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136 lines
3.5 KiB
Markdown
136 lines
3.5 KiB
Markdown
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title = "Advanced variable format options"
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keywords = ["grafana", "templating", "documentation", "guide", "template", "variable"]
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type = "docs"
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[menu.docs]
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name = "advanced-variable-format-options"
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parent = "variables"
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weight = 300
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# Advanced variable format options
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The formatting of the variable interpolation depends on the data source, but there are some situations where you might want to change the default formatting.
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For example, the default for the MySql data source is to join multiple values as comma-separated with quotes: `'server01','server02'`. In some cases, you might want to have a comma-separated string without quotes: `server01,server02`. You can make that happen with advanced variable formatting options listed below.
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## General syntax
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Syntax: `${var_name:option}`
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Test the formatting options on the [Grafana Play site](https://play.grafana.org/d/cJtIfcWiz/template-variable-formatting-options?orgId=1).
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If any invalid formatting option is specified, then `glob` is the default/fallback option.
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An alternative syntax (that might be deprecated in the future) is `[[var_name:option]]`.
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## CSV
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Formats multi-value variable as a comma-separated string.
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:csv}'
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Interpolation result: 'test1,test2'
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```
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## Distributed - OpenTSDB
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Formats multi-value variable in custom format for OpenTSDB.
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:distributed}'
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Interpolation result: 'test1,servers=test2'
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```
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## Doublequote
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Formats single- and multi-valued variables into a comma-separated string, escapes `"` in each value by `\"` and quotes each value with `"`.
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:doublequote}'
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Interpolation result: '"test1","test2"'
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```
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## Glob - Graphite
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Formats multi-value variable into a glob (for Graphite queries).
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:glob}'
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Interpolation result: '{test1,test2}'
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```
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## JSON
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Formats multi-value variable as a comma-separated string.
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:json}'
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Interpolation result: '["test1", "test2"]'
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```
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## Lucene - Elasticsearch
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Formats multi-value variable in Lucene format for Elasticsearch.
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:lucene}'
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Interpolation result: '("test1" OR "test2")'
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```
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## Percentencode
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Formats single and multi valued variables for use in URL parameters.
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```bash
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servers = ['foo()bar BAZ', 'test2']
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String to interpolate: '${servers:percentencode}'
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Interpolation result: 'foo%28%29bar%20BAZ%2Ctest2'
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```
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## Pipe
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Formats multi-value variable into a pipe-separated string.
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```bash
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servers = ['test1.', 'test2']
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String to interpolate: '${servers:pipe}'
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Interpolation result: 'test1.|test2'
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```
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## Regex
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Formats multi-value variable into a regex string.
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```bash
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servers = ['test1.', 'test2']
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String to interpolate: '${servers:regex}'
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Interpolation result: '(test1\.|test2)'
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```
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## Singlequote
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Formats single- and multi-valued variables into a comma-separated string, escapes `'` in each value by `\'` and quotes each value with `'`.
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```bash
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servers = ['test1', 'test2']
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String to interpolate: '${servers:singlequote}'
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Interpolation result: "'test1','test2'"
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```
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## Sqlstring
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Formats single- and multi-valued variables into a comma-separated string, escapes `'` in each value by `''` and quotes each value with `'`.
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```bash
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servers = ["test'1", "test2"]
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String to interpolate: '${servers:sqlstring}'
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Interpolation result: "'test''1','test2'"
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```
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