InfluxDb

cheat sheet / examples https://www.sqlpac.com/en/documents/influxdb-flux-language-advanced-features.html#influxdb-v2-quick-reminders
https://www.influxdata.com/blog/top-5-hurdles-for-flux-beginners-and-resources-for-learning-to-use-flux/

influxdb 3

from(bucket: "bucket")
  |> range(start: -2h)
  |> filter(fn: (r) =>  exists r.nas_name)
//   |> group(columns: ["nas_name","_measurment"])
  |>last()
  |> yield(name: "unique")

https://www.influxdata.com/blog/tldr-influxdb-tech-tips-converting-influxql-queries-flux-queries/

import "influxdata/influxdb/schema"
 
FROM(bucket: "sensors")
//   |> range(START: v.timeRangeStart, stop: v.timeRangeStop)
  |> range(START: 2024-02-20T01:00:00Z, stop: 2024-02-20T02:00:00Z)
  |> FILTER(fn: (r) => r["_measurement"] == "netflow")
  |> FILTER(fn: (r) => r["host"] == "gorkii21")
  |> FILTER(fn: (r) => r._field == "direction" OR r._field == "dst" OR r._field == "in_bytes")
  |> schema.fieldsAsCols()
  |> FILTER(fn: (r) => r["direction"] == "ingress")  
  |> FILTER(fn: (r) => r["dst"] == "192.168.114.109")   
  |> duplicate(COLUMN: "in_bytes", AS: "_value")
  |> duplicate(COLUMN: "dst", AS: "_measurement")
  |> GROUP(COLUMNS: ["_measurement","_start"])
  |> aggregateWindow(every: 5m,  fn: SUM, createEmpty: FALSE)
// //   |> GROUP(COLUMNS: ["dst"])
// //   |>SUM()
//        
//   |> SUM()
//   |> yield()
//   
//   |> DROP(COLUMNS: ["host"])  
//   |> aggregateWindow(every: v.windowPeriod, fn: LAST, createEmpty: FALSE)

Fields

TMP flux

import "influxdata/influxdb/schema"
 
FROM(bucket: "sensors")
//   |> range(START: v.timeRangeStart, stop: v.timeRangeStop)
  |> range(START: 2024-02-22T01:00:00Z, stop: 2024-02-22T10:00:00Z)
  |> FILTER(fn: (r) => r["_measurement"] == "netflow")
  |> FILTER(fn: (r) => r["host"] == "gorkii21")
  |> FILTER(fn: (r) => r._field == "direction" OR r._field == "dst" OR r._field == "in_bytes" OR r._field == "in_snmp" OR r._field == "out_snmp" OR r._field == "in_packets")
  |> schema.fieldsAsCols()
  // |> FILTER(fn: (r) => r["direction"] == "ingress")  
   |> FILTER(fn: (r) => r["dst"] == "192.168.114.109")   
   |> duplicate(COLUMN: "in_bytes", AS: "_value")
//  |> duplicate(COLUMN: "in_packets", AS: "_value")
  |> duplicate(COLUMN: "dst", AS: "_measurement")
    |> GROUP(COLUMNS: ["_measurement","_start","in_snmp","out_snmp","direction"])
   |> aggregateWindow(every: 10m,  fn: SUM, createEmpty: TRUE)
//   |> GROUP(COLUMNS: ["dst"])
//   |> SUM()
//   |> GROUP()
//   |>top(n: 10)
//   |>sort(COLUMNS: ["_value"])
//   |>yield()
//   
//   
//  
//   |> SUM()
//   |> yield()
//   
//   |> DROP(COLUMNS: ["host"])
//   |> aggregateWindow(every: v.windowPeriod, fn: LAST, createEmpty: FALSE)

InfluxDb

Influxdb queries

Cygnus