Influxdb select time

This Product. Time Series Database:Time Syntax. By default, the start time of the time range is specified by the

I am using influxdb and in the select query I read time and newTs as db field represents epoch in ns as below. So how can I use variable in the where clause, I have added newTs as integer variable in the database, even I tried newTs::integer in the select query but it fails. How to solve this problem? Can any expert please guide me on this, it would be of great help? I searched a lot on Google and Influx Documentation but failed to find this precise information. There may be a workaround, but I suspect your best bet would be trying to run the query in Flux instead.

Influxdb select time

InfluxQL is designed for working with time series data and includes features specifically for working with time. You can review the following ways to work with time and timestamps in your InfluxQL queries:. If you are using the InfluxQL shell , use the precision helper command precision rfc to view results in human readable format. Specify alternative formats with the epoch query string parameter. Other supported features include: Absolute time Relative time. The RFC date-time string requires single quotes. The RFClike date-time string requires single quotes. By default, InfluxDB assumes that all epoch timestamps are in nanoseconds. Include a duration literal at the end of the epoch timestamp to indicate a precision other than nanoseconds. All timestamp formats support basic arithmetic. Specify a time range with RFC date-time strings. The query returns data with timestamps between August 18, at Specify a time range with RFClike date-time strings.

If you request a query that has no timestamp to return, such as an aggregation function with an unbounded time range, InfluxDB returns epoch 0 as the timestamp. Specify a time range with second-precision epoch timestamps.

To use with InfluxDB, cast the return value to a timestamp. The following example uses the sample data set provided in Get started with InfluxDB tutorial. To use with InfluxDB, cast the return value to a string. The following example uses the sample data set provided in the Get started with InfluxDB tutorial. Calculates time intervals and returns the start of the interval nearest to the specified timestamp. If no rows exist in a time interval, a new row is inserted with a time value set to the interval start time, all columns in the GROUP BY clause populated, and null values in aggregate columns.

InfluxQL is designed for working with time series data and includes features specifically for working with time. You can review the following ways to work with time and timestamps in your InfluxQL queries:. If you are using the InfluxQL shell , use the precision helper command precision rfc to view results in human readable format. Specify alternative formats with the epoch query string parameter. Other supported features include: Absolute time Relative time. The RFC date-time string requires single quotes. The RFClike date-time string requires single quotes.

Influxdb select time

Returns the current system time UTC. Windows use preset round-number boundaries based on the specified interval that are independent of time conditions in the WHERE clause. Downsample data into time-based intervals. The following example uses the Bitcoin price sample dataset. Thank you for being part of our community!

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The start time of the time range is on September 18, You can set the epoch parameter to specify other time formats. InfluxDB Clustered is currently in limited availability and is only available to a limited group of InfluxData customers. Note that fill has no effect on the query results. Currently, there is no syntax to distinguish between regular expressions for field keys and regular expressions for tag keys in the SELECT clause. Notice that the main query specifies difference as the field key in the MEAN function. Doc umentation. So how can I use variable in the where clause, I have added newTs as integer variable in the database, even I tried newTs::integer in the select query but it fails. A subquery is a query that is nested in the FROM clause of another query. Anaisdg May 26, , pm 2. Therefore, the query returns no data.

Hello Nibeckj , Welcome. You can create variables for those times and use the flux date package. Anaisdg : Can you please give another hint how to combine create-variable and the date-packages?

The query returns the data whose timestamps occur from Improve performance of time-bound subqueries To improve the performance of InfluxQL queries with time-bound subqueries, apply the WHERE time clause to the outer query instead of the inner query. You can continue using it as you currently are without any changes to your code. Have a question about this project? Note that the WHERE clause must provide an alternative upper bound to override the default now upper bound. N specifies the number of points to return from the specified measurement. To be honest your objective is not that clear to me based on the description. Can you help me get started? Use a subquery to apply a query as a condition in the enclosing query. If time was queryable, then it's not clear what should select time from foo return? Timestamp values support addition and subtraction operations with duration literals.