• label=value, where label equals value
• label!=value, where label does not equal value
• label=, where key does not have label label
• label!=, where key has label label
• label=(value1,value2,...), where key with label label equals one of the values in the list
• label!=(value1,value2,...), where key with label label does not equal any of the values in the list

Notes:

• At least one label=value filter is required.
• Filters are conjunctive. For example, the FILTER type=temperature room=study means the a time series is a temperature time series of a study room.
• Don't use whitespaces in the filter expression.

Create a set of sensors to measure temperature and humidity in your study and kitchen.

127.0.0.1:6379> TS.CREATE telemetry:study:temperature LABELS room study type temperature
OK
127.0.0.1:6379> TS.CREATE telemetry:study:humidity LABELS room study type humidity
OK
127.0.0.1:6379> TS.CREATE telemetry:kitchen:temperature LABELS room kitchen type temperature
OK
127.0.0.1:6379> TS.CREATE telemetry:kitchen:humidity LABELS room kitchen type humidity
OK

Retrieve keys of all time series representing sensors located in the kitchen.

127.0.0.1:6379> TS.QUERYINDEX room=kitchen
1) "telemetry:kitchen:humidity"
2) "telemetry:kitchen:temperature"

To retrieve the keys of all time series representing sensors that measure temperature, use this query:

127.0.0.1:6379> TS.QUERYINDEX type=temperature
1) "telemetry:kitchen:temperature"
2) "telemetry:study:temperature"