ORDER BY clause

Use the ORDER BY clause to sort data.

• Syntax
• Examples

ORDER BY time DESC

By default, InfluxDB returns results in ascending time order; the first point returned has the oldest timestamp and the last point returned has the most recent timestamp. ORDER BY time DESC reverses that order such that InfluxDB returns the points with the most recent timestamps first.

Syntax

SELECT_clause FROM_clause [WHERE_clause] [GROUP_BY_clause] ORDER BY time DESC

If the query includes a GROUP BY clause, ORDER by time DESC must appear after the GROUP BY clause. If the query includes a WHERE clause and no GROUP BY clause, ORDER by time DESC must appear after the WHERE clause.

Examples

Return the newest points first

SELECT "water_level" FROM "h2o_feet" WHERE "location" = 'santa_monica' ORDER BY time DESC

Output:

Name: h2o_feet

The query returns the points with the most recent timestamps from the h2o_feet measurement first. Without ORDER by time DESC, the query would return the following output:

Output:

Name: h2o_feet

Return the newest points first and include a GROUP BY time() clause

SELECT MEAN("water_level") FROM "h2o_feet" WHERE time >= '2019-08-18T00:00:00Z' AND time <= '2019-08-18T00:42:00Z' GROUP BY time(12m) ORDER BY time DESC

Output:

Name: h2o_feet

The query uses the InfluxQL MEAN() function and a time interval in the GROUP BY clause to calculate the average water_level for each 12-minute interval in the queried time range. ORDER BY time DESC returns the most recent 12-minute time intervals first.

Without ORDER BY time DESC, the query would return the following output:

Output:

Name: h2o_feet