Influxdb select time

I am using influxdb and in the select query I read time and newTs as db field represents epoch in ns as below.

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

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. The following examples use the sample data set provided in the Get started with InfluxDB tutorial. The example below uses interpolate to fill null values by interpolating values between non-null values. The example below uses locf to fill null values by carrying the last observed value forward. The following precisions are supported:. Can be a constant, column, or function. Returns a sub-field from a time value as an integer.

This example is a continuation of the scenario outlined in Common Issues with Basic Syntax.

This Product. Time Series Database:Time Syntax. By default, the start time of the time range is specified by the The end time of the time range is the time that is returned by the now function. If you do not specify this element, the default value.

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.

Influxdb select time

For more information, see error about mixing aggregate and non-aggregate queries. This clause supports several formats for specifying a measurement s :. While not always necessary, we recommend that you double quote identifiers. Note: InfluxQL quoting guidelines differ from line protocol quoting guidelines. Please review the rules for single and double-quoting in queries. Select all fields and tags from a measurement. The data above is a partial listing of the query output, as the result set is quite large. Select specific tags and fields from a measurement. Select specific tags and fields from a measurement and provide their identifier type.

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This example is a continuation of the scenario outlined in Common Issues with Basic Syntax. Integers and unsigned integers are parsed as Unix second timestamps and return the corresponding RFC timestamp. If interested in being part of the limited access group, please contact the InfluxData Sales team. We welcome and encourage your feedback and bug reports for InfluxDB and this documentation. Fully qualify a measurement by specifying its database and retention policy. Great, clear story, thanks! Was this page helpful? If N is greater than the number of series in a measurement, InfluxDB returns all series from that measurement. Hello Nibeckj , Welcome. Learn more Contact InfluxData Sales. The second query returns no results. Integers and unsigned integers are parsed as Unix microsecond timestamps and return the corresponding RFC timestamp. You should certainly be able to do that, yes. In Grafana, I want to compare the now value to the most recent value from a sensor to see if the values are stale or current. By default, InfluxDB assumes that all epoch timestamps are in nanoseconds.

A time series database TSDB is specifically made for data that can be evaluated as a "time-series," which includes sensor outputs, market trends, CPU utilization, and application performance metrics. Most popular types of databases both SQL and NoSQL are not optimized for handling large-scale scans, or summarization or aggregation of time-series data. Time-series databases have built-in functionality to work with aggregation, down-sampling, data lifecycle management and summarization.

You can continue using it as you currently are without any changes to your code. If N2 is greater than the number of series in a measurement, InfluxDB returns all series from that measurement. It changes the value reported for time intervals that have no data. Nibeckj : Did you find a solution to your problem. See Cast Operations for more information. Note: Regular expression comparisons are more computationally intensive than exact string comparisons; queries with regular expressions are not as performant as those without. It might be all you need. I tried this as well, but TimeCopy and Time field both can not co-exists in influx, afaik. The count for the second timestamp covers the raw data between TZ and up to, but not including, TZ. Visit your organization's homepage and find the following at the bottom of the right column:.