Flux filter on field value

Author: hwmr

August undefined, 2024

WebMar 4, 2024 · I am new to flux query language (with Influx DB 2) and cant find a solution for the following problem: I have data with changing true and false values: I was able to … WebFlux provides the following primary filter functions: range(): filter data based on time. filter(): filter data based on column values. filter() uses a predicate function defined in …

Query fields and tags in InfluxDB using Flux InfluxDB Cloud Document…

WebTransform data with mathematic operations. Flux, InfluxData’s data scripting and query language, supports mathematic expressions in data transformations. This article … WebUse Flux dynamic query functions to extract scalar values from Flux query output. This lets you, for example, dynamically set variables using query results. scalarValue = (tables=< … florian nonnenmacher

Grafana + InfluxDB Flux - query for displaying multi-select variable ...

WebQuery using conditional logic. Flux provides if, then, and else conditional expressions that allow for powerful and flexible Flux queries. If you’re just getting started with Flux … WebTo use values from multiple fields in a mathematic calculation, complete the following steps: Filter by fields required in your calculation; Pivot fields into columns; Perform the … WebJul 6, 2024 · I'm not sure if this kills performance (specifically the fieldsAsCols call), but it works. It filters by a tag, then pivots the table so that all fields become their own … florian nitsch

Transform data with mathematic operations in Flux

Use regular expressions in Flux InfluxDB Cloud Documentation

WebFeb 22, 2024 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams great tailed grackle range mapWebAug 23, 2024 · It seems the below solves it: from (bucket: "test-bucket-new") > range (start: v.timeRangeStart, stop: v.timeRangeStop) > filter (fn: (r) => contains (value: r ["_measurement"], set: $ {devices:json})) > filter (fn: (r) => r ["_field"] == "Speed") > aggregateWindow (every: v.windowPeriod, fn: mean) > yield (name: "mean") Share Follow florian noack pianist swan lake

"Webfilter () function. Flux 0.7.0+. View InfluxDB support. filter () filters data based on conditions defined in a predicate function ( fn ). Output tables have the same schema as the … " - Flux filter on field value

Flux filter on field value

How to use a InfluxDB-tag value in a grafana legend?

WebInfluxQL (Influx Query Language), the InfluxDB v 1.x SQL Like language, is still supported in InfluxDB v2 for backward compatibility, but only for InfluxDB 1.x users with authentication migrated to InfluxDB v2. Flux is now the native language in InfluxDB v2. Flux language unifies queries and ETL processings (InfluxQL, TickScripts). WebFilter data by value This transformation allows you to filter your data directly in Grafana and remove some data points from your query result. You have the option to include or exclude data that match one or more conditions you define. The …

Did you know?

WebFeb 14, 2024 · I am trying to create two new columns with the first and last values using the last() and first() functions. However the function isn’t working when I try to map the new columns. Webfilter() performs operations similar to the SELECT statement and the WHERE clause in InfluxQL and other SQL-like query languages. The filter() function filter() has an fn …

Webkeep () function. keep () returns a stream of tables containing only the specified columns. Columns in the group key that are not specifed in the columns parameter or identified by the fn parameter are removed from the group key and dropped from output tables. keep () is the inverse of drop (). WebOct 12, 2024 · This is why when you filter your Flux query, it looks like this: > filter(fn: (r) => r["_measurement"] == "mydata") > filter(fn: (r) => r["_field"] == "field1") This data structure allows for faster queries and aggregations in the …

WebUse filter() to query data based on fields, tags, or any other column value. filter() performs operations similar to the SELECT statement and the WHERE clause in InfluxQL and … WebSep 9, 2024 · Flux output tables use a vertical (column-wise) data layout for fields. Note that the price and the volume fields are stored as two separate rows. To achieve the result you can use a function called v1.fieldsAsCols () to convert the table from a vertical layout back to the horizontal layout.

WebWith Flux, regular expressions are primarily used for evaluation logic in predicate functions for things such as filtering rows, dropping and keeping columns, state detection, etc. This …

WebMay 7, 2015 · For fields where there exists at least one "invalid" value (for example, a negative size in bytes) you can create a query which allows you to find rows with missing data, without modifying the stored data. great tailed grackle scientific nameWebAug 5, 2024 · I'm trying to do a filter on the field values. It's like a normal SQL query like below. select col1,col2,col3 from measurement where col3 > 10 here col1,col2,col3 … florian nolte berlinWebSep 20, 2024 · This is very simple in influx: select a,b from test where a>10 AND b=30. But I have absolutely no idea how to acomplish this in flux? At least via Chronograf it appears … floriannopolis web camsWebAug 16, 2024 · Since we queried for two tag values, "coyote_creek" and "santa_monica", we will get two tables back. _measurement: the measurement for the data we queried for–"average_temperature" _field: the field key for the data we queried for–"degrees" _value: the field values for the data; _start: the start date of our query; _stop: the stop … great-tailed triokWebSep 20, 2024 · At least via Chronograf it appears that every value is returned as stand-alone and can be addressed via _field for field name and _value for the actual value. This gets me to: from (bucket: "test/autogen") > range (start: MyStartTime, stop: MyEndTime) > filter (fn: (r) => r._measurement == "test" ) > filter (fn: (r) => r._field == "a" ) great tailed grackle soundWebJun 30, 2024 · Filter values in one field based on value of another field. Fluxlang. flux. captdunco June 30, 2024, 2:03pm 1. Hello, I am new to Flux and am using Influxdb to log my solar installation. My inverter has the option to source power from two sources: Batteries or a back up generator. I collect the power output every 5 minutes (Apparent power which ... great tailed grackle symbolismWebApr 27, 2024 · Influxdb 2.0 Flux - How to return 0 instead null. I want to count amount of values that are greater than specific value. Data: from (bucket: "bucket name") > range (start: v.timeRangeStart, stop: v.timeRangeStop) > filter (fn: (r) => r._value > 35) > count () If there are no values in the processing data range that are greater the specified ... great-tailed grackle sounds