Explore your schema with InfluxQL
Limited availability
InfluxDB Clustered is currently only available to a limited group of InfluxData customers. If interested in being part of the limited access group, please contact the InfluxData Sales team.
Use InfluxQL SHOW statements to return information about your data schema.
Sample data
The following examples use data provided in sample data sets. To run the example queries and return identical results, follow the instructions provided for each sample data set to write the data to your InfluxDB Clustered bucket.
- List measurements in a bucket
- List field keys in a measurement
- List tag keys in a measurement
- List tag values for a specific tag key
List measurements in a bucket
Use SHOW MEASUREMENTS
to list measurements in your InfluxDB bucket.
SHOW MEASUREMENTS
List measurements that contain specific tag key-value pairs
To return only measurements with specific tag key-value pairs, include a WHERE
clause with tag key-value pairs to query for.
SHOW MEASUREMENTS WHERE room = 'Kitchen'
List measurements that match a regular expression
To return only measurements with names that match a
regular expression,
include a WITH clause that compares the MEASUREMENT to a regular expression.
SHOW MEASUREMENTS WITH MEASUREMENT =~ /^home/
List field keys in a measurement
Use SHOW FIELD KEYS
to return all field keys in a measurement.
Include a FROM clause to specify the measurement.
If no measurement is specified, the query returns all field keys in the bucket.
SHOW FIELD KEYS FROM home
List tag keys in a measurement
Use SHOW TAG KEYS
to return all tag keys in a measurement.
Include a FROM clause to specify the measurement.
If no measurement is specified, the query returns all tag keys in the bucket.
SHOW TAG KEYS FROM home_actions
List tag keys in measurements that contain a specific tag key-value pair
To return all tag keys measurements that contain specific tag key-value pairs,
include a WHERE clause with the tag key-value pairs to query for.
SHOW TAG KEYS WHERE room = 'Kitchen'
List tag values for a specific tag key
Use SHOW TAG VALUES
to return all values for specific tags in a measurement.
- Include a
FROMclause to specify the measurement. If no measurement is specified, the query returns all tag values from the specified tag keys in the bucket. - Use the
WITHclause to compareKEYto tag keys to list the values of. - Use the
WHEREclause to restrict the search to a specific time range (default time range is the current time minus 1 day).
Tag and field values aren’t indexed in InfluxDB Clustered - SHOW TAG VALUES scans all tag values within the given time range.
Because SHOW TAG VALUES can be an intensive operation, it has a default time range equal to the current time minus 1 day.
To query more or less data, specify a time range in the WHERE clause.
SHOW TAG VALUES FROM weather WITH KEY = location
List tag values for multiple tags
To return tag values for multiple specific tag keys, use the IN operator in
the WITH clause to compare KEY to a list of tag keys.
SHOW TAG VALUES FROM home_actions WITH KEY IN ("level", "action")
List tag values for tags that match a regular expression
To return only tag values from tags keys that match a regular expression, use
regular expression comparison operators in your WITH clause to compare KEY
to the regular expression.
SHOW TAG VALUES WITH KEY =~ /oo/
List tag values associated with a specific tag key-value pair
To list tag values for tags associated with a specific tag key-value pair:
- Use the
WITHclause to identify what tag keys to return values for. - Include a
WHEREclause that identifies the tag key-value pair to query for.
The following example returns tag values for the action and level tags for
points where the room tag value is Kitchen.
SHOW TAG VALUES WITH KEY IN ("action", "level") WHERE room = 'Kitchen'
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