InfluxQL feature support
InfluxQL is being rearchitected to work with the InfluxDB v3 storage engine. This process is ongoing and some InfluxQL features are still being implemented. This page provides information about the current implementation status of InfluxQL features.
In-progress features
SLIMIT clause
InfluxQL in InfluxDB Clustered does not currently support the SLIMIT clause,
which limits the number of series
returned in query results.
SOFFSET clause
InfluxQL in InfluxDB Clustered does not currently support the SOFFSET clause,
which specifies the number of series
to skip before returning results.
Metaqueries
InfluxQL metaqueries return information about the schema of time series data stored in InfluxDB. The following table provides information about what metaqueries are available in InfluxDB Clustered:
| Metaquery | Supported |
|---|---|
| SHOW DATABASES | |
| SHOW RETENTION POLICIES | |
| SHOW MEASUREMENTS | |
| SHOW SERIES | |
| SHOW SERIES CARDINALITY | |
| SHOW TAG KEYS | |
| SHOW TAG KEY CARDINALITY | |
| SHOW TAG VALUES | |
| SHOW TAG VALUES CARDINALITY | |
| SHOW FIELD KEYS | |
| SHOW FIELD KEYS CARDINALITY |
Cardinality metaqueries
With the InfluxDB v3 storage engine, series cardinality is no longer a limiting factor for database performance. Cardinality-related metaqueries will likely not be supported with the InfluxDB v3 storage engine.
Function support
Aggregate functions
| Function | Supported |
|---|---|
| COUNT() | |
| DISTINCT() | |
| INTEGRAL() | |
| MEAN() | |
| MEDIAN() | |
| MODE() | |
| SPREAD() | |
| STDDEV() | |
| SUM() |
Selector functions
| Function | Supported |
|---|---|
| BOTTOM() | |
| FIRST() | |
| LAST() | |
| MAX() | |
| MIN() | |
| PERCENTILE() | |
| SAMPLE() | |
| TOP() |
Transformations
Technical and predictive analysis
| Function | Supported |
|---|---|
| CHANDE_MOMENTUM_OSCILLATOR() | |
| DOUBLE_EXPONENTIAL_MOVING_AVERAGE() | |
| EXPONENTIAL_MOVING_AVERAGE() | |
| HOLT_WINTERS() | |
| HOLT_WINTERS_WITH_FIT() | |
| KAUFMANS_EFFICIENCY_RATIO() | |
| KAUFMANS_ADAPTIVE_MOVING_AVERAGE() | |
| RELATIVE_STRENGTH_INDEX() | |
| TRIPLE_EXPONENTIAL_MOVING_AVERAGE() | |
| TRIPLE_EXPONENTIAL_DERIVATIVE() |
Date and time functions
| Function | Supported |
|---|---|
| now() | |
| time() | |
| tz() |
Miscellaneous functions
| Function | Supported |
|---|---|
| fill() |
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