2.7 KiB
2.7 KiB
Use the ORDER BY
clause to sort data by time in ascending or descending order.
InfluxQL only supports sorting data by time
.
Syntax
SELECT_clause FROM_clause [WHERE_clause] [GROUP_BY_clause] ORDER BY time [ASC|DESC]
- If the the
ORDER BY
clause is not included, the default behavior is to sort data by time in ascending order:ORDER BY time ASC
. - If the query includes
WHERE
andGROUP BY
clauses, theORDER BY
clause must come after these clauses.
Sort orders
- ASC (ascending): The first row in the results has the oldest timestamp. The last row in the results has the most recent timestamp.
- DESC (descending): The first row in the results has the most recent timestamp. The last row in the results has the oldest timestamp.
Examples
The following examples use the Get started home sensor sample data.
{{< expand-wrapper >}}
{{% expand "Sort data with the oldest points first" %}}
[!Tip] Ordering data by time in ascending order is the default behavior. Including
ORDER BY time ASC
in the query isn't necessary, but it is supported.
{{% influxdb/custom-timestamps %}}
SELECT *
FROM home
WHERE
room = 'Kitchen'
AND time >= '2022-01-01T08:00:00Z'
AND time <= '2022-01-01T12:00:00Z'
ORDER BY time ASC
{{% influxql/table-meta %}} Name: home {{% /influxql/table-meta %}}
time | co | hum | room | temp |
---|---|---|---|---|
2022-01-01T08:00:00Z | 0 | 35.9 | Kitchen | 21 |
2022-01-01T09:00:00Z | 0 | 36.2 | Kitchen | 23 |
2022-01-01T10:00:00Z | 0 | 36.1 | Kitchen | 22.7 |
2022-01-01T11:00:00Z | 0 | 36 | Kitchen | 22.4 |
2022-01-01T12:00:00Z | 0 | 36 | Kitchen | 22.5 |
{{% /influxdb/custom-timestamps %}} {{% /expand %}}
{{% expand "Sort data with the newest points first" %}}
{{% influxdb/custom-timestamps %}}
SELECT *
FROM home
WHERE
room = 'Kitchen'
AND time >= '2022-01-01T08:00:00Z'
AND time <= '2022-01-01T12:00:00Z'
ORDER BY time DESC
time | co | hum | room | temp |
---|---|---|---|---|
2022-01-01T12:00:00Z | 0 | 36 | Kitchen | 22.5 |
2022-01-01T11:00:00Z | 0 | 36 | Kitchen | 22.4 |
2022-01-01T10:00:00Z | 0 | 36.1 | Kitchen | 22.7 |
2022-01-01T09:00:00Z | 0 | 36.2 | Kitchen | 23 |
2022-01-01T08:00:00Z | 0 | 35.9 | Kitchen | 21 |
{{% /influxdb/custom-timestamps %}} {{% /expand %}}
{{< /expand-wrapper >}}