Influxdb same timestamp different tags Question: How can I I'm investigating whether I can use InfluxDB for storing financial tick data. I am using the following imports: from influxdb_client import InfluxDBClient, Point from You can send every data point twice, in the same batch of line protocol lines - one with the timestamp and the other without it, to a different measurement with field (eg. The example given uses the time method from the Point class, which is supposed to allow for writing data with a provided timestamp rather than the data received time at the server. You'll need to have a Continuous Query for each possible value for the period tag. The issue is that InfluxDB is a time series database, so it is not possible to see the I am wondering if anyone has any idea how to change the timestamp, and if so, what would be the best way to to do so with a large amount of data Furthermore I read that you can specify the timestamp in the “Line Protocol” in different resolutions (ns/us/ms/s) as integer. g. This documentation is a great point to start. Idea of InfluxDB is that measurements are separate "tables" which are indexed by time and tag keys. If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the I am collecting data about some vehicles(173). The advantage, at least from performance point of view, is that when there is no record in neither Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about The InfluxDB v3 product line has seen significant enhancements in query performance and has made new management tooling available. Related Topics Is it a limitation of influx that only one point can exist with the same tags and timestamp? If a collision does occur, does the old one get overwritten? I can reproduce with this script: from The measurement has multiple data points for the same timestamp but the tagset values are unique, which means the data won’t get overwritten. > SELECT "time", Fields are different but Tags are same still getting overwritten. influxdb, flux. 3 on Raspbian. 1439856000 and loading the file via curl the timestamp is interpreted correctly. time() to join two streams of data based on time values in the _time column. > select * from "EVENT_LIVE" name: EVENT_LIVE A point is uniquely identified by the measurement name, tag set, and timestamp. So such data points are silently overwritten. Tags. InfluxDB version used: 1. Hello, i need help with a query: Need to know, how much uniqe TAGs entries are there per day. DISTINCT() often returns several results with the same timestamp; InfluxDB i got following data structure: myImage. Companies. That just leaves the timestamp to differentiate the two, and since they have the same GROUP BY time() clause, they will write points with identical timestamps. Each JSON record results in a tuple of entries in different series that have slightly different timestamps. To refer to a measurement in an InfluxDB is getting a major upgrade with the I am trying to fetch the tag values for a given measurement. query, influxdb. Hi, You don’t get this result from InfluxDB unless you a) use a pivot or b) both ID and VAL are tags (show all values with same timestamp, and specific tag) InfluxQL. I'm guessing I need to some how put Level as a tag so that each row can be unique but I'm not sure how to do that. For more InfluxDB tips, check out our Frequently Asked Questions page and feel free to post your questions in the InfluxDB users group. influxdb, client-libraries. This resulted in a large amount of tag values for the tag key timestamp. Problem: When I write points to the database with same timestamp but different tags (example : location) and field (temperature) value , influx overwrites both InfluxDB identifies unique data points by their measurement, tag set, and timestamp. These enhancements include an operational Hi, According to faq, if timestamp and tags are the same but fields are different, Influx will only store the new field set. I am using the following imports: from influxdb_client import InfluxDBClient, Point from I am using influxdb_client python library for InfluxDB operations. which offers different functionality than InfluxDB Cloud Serverless powered by the v3 storage engine. 8 – Jason. js. varID measurements; Or. 0 via the Flux query language using the Python API. Thanks for your answer. I need to save data with a millisecond precision. I created a new tag called "descriptor" which for each event I insert a random number between 1-1000. In case we want to refer to another timestamp in the same example, we will use unixtime2 or rfc3339time2. 8 and doing a SELECT statement brings back all the key values for one timestamp along with the tags. Each stream must have one or more columns with common values. So basically I would like to be able to view two different databases within the same Grafana graph panel. (I'll use any version of Influx. time() can use any of the available join methods. InfluxDB: Group rows with same timestamp. 1004002Z. Users. So it does overwrite by default, and one cannot have duplicated entries for a given timestamp + tag keys + field. So after writing a point to the database where I set the time value on the point that I write to the DB I see a result that I Assuming angle is the name of the measurement and userid, product and value are fields, try removing the comma after angle if you are not applying any tags and add another comma before value?. 145224194 UTC and now(). join. Back to our A point is uniquely identified by the measurement name, tag set, and timestamp. Related. Two different series with same tag values? InfluxDB 2. If your data comes in at a regular interval, you might want to consider using downsampling into 10 minute groupings and just issue a query that groups by 30 minutes to get the results you're looking for (rather than storing twice the amount of data). The result is two rows: I’ve tried also with timestamp as tag, but same, no errors and timestamp doesn’t write to influxdb, nothing happens, every other field or string is inserting normally. These values are fixed and the probability for the same timestamp with the same random descriptor value is very low. There are many control module types - PID controller, 2-State Device like a valve or a motor, Deadband I am looking through all the InfluxDB examples, and they all seem to insert with "time now" (time of insert). conf file, in the [[inputs. Any help will be greatly appreciated. 1. The tag keys in the sample data are location and scientist. 1 Please refer to A point is uniquely identified by the measurement name, tag set, and timestamp. Each line represents a data point. I have different records within the same bucket with a different ID tag. For instance, I've tried a few different I'm investigating whether I can use InfluxDB for storing financial tick data. 8. 0 which I want to view with a Time Series in Grafana v9. The first thing you should do is making yourself familiar with the base concepts of Influx, it's really important to understand what a series is and how it is composed. i got following data structure: myImage. But seems that influxdb doesn't recognize it. Grafana / Influxdb: Sum of value recorded by different clients. InfluxDB select different time between two row having same a field value. Alternative way is to pivot and then fill missing values using previous value. The difference between two non-null values is their algebraic difference; or null, if the result is negative and nonNegative: true;; null minus some value is always null;; Some value v minus null is v minus the last non-null value seen before v; or null if v is the first non-null value seen. I suggest you change your database architecture by writing values into different value fields. I cannot seem to generate that same timestamp through Python, however. Fluxlang. Skip to main content. Are you using telegraf to write data? You could try using a In this post we share how to use the InfluxDB CLI with InfluxDB Cloud. Have a nice day . Only difference is query without group by will have the value's actual timestamp and the group by query will have the interval's timestamp instead. However, it doesn't make any difference what I choose here, as it will throw me the same The varID is also a tag, even if redundant. I have a db of hydrological data. It is possible to query the different data types by specifying the data type on the field via "field::data type", but I'm not aware of a way to write lower priority data once the data type has been changed. So you need to build in a way to uniquely identify each point using tags. I struggle a bit with the design of my metrics for InfluxDB 1. Jobs. If you inadvertently add the same name for a tag and a field, see Frequently asked questions for information about how to query the data predictably and how to fix the issue. If I view a measurement in InfluxDB, I see time stamps such as: 1491030000000000000 If I view that measurement in InfluxDB using the -precision rfc3339 it appears as: 2017-04-01T07:00:00Z So I can see that InfluxDB used UTC. If the data types of field values are different across shards, TSDB for InfluxDB® performs the required operations to convert data types (if applicable). Each data point used the forecast time as the timestamp in InfluxDB. InfluxDB write points with same timestamp but different measurement. All InfluxDB data is stored in a bucket. 14 in AWS ECS container What are you trying to achieve? I need to calculate the difference time I’m tryingto sum values in InfluxDB but I’m struggling a bit. Grafana. The In case we want to refer to another timestamp in the same example, we will use unixtime2 or rfc3339time2. Both tag keys and tag values are stored as strings and record metadata. I can get the evolution of 1 plug with this query: from single timestamp) at a time: sumColumns = (r) => r |>experimental. An in-depth look into how two leading time-series databases stack up in terms of data model, query language, reliability, performance, ecosystem, operational management, and company/community support. 8 | DS18S20 Thanks a lot! mqtt; influxdb Can we nicely convert MQTT topic descriptions into InfluxDB tags, Avoid reading the same file multiple times using Telegraf and file input plugin. What am i trying to do? : I am trying to setup the mainflux IoT framework that is used for sending and receiving data. I have used the below query to get a timestamp out, but I'm unsure how to ensure that the timestamp I extract via this method is indeed the most recent one. Option 3 (if possible). In most cases my points has different timestamp and tags. data (show all values with same timestamp, and specific tag) InfluxQL. X and I am saving points with different tags, but the same field name. 8 production system, (albeit it with different Certainly using the CLI with 1. The measurement is train_speed. mqtt_consumer]] section. 2: 612: Hello, I have a kind of general question on how to deal with the following issue: we have InfluxDB OSS 1. INSERT angle userid=1,product=dname,value=5. When I first started with InfluxDB, I had a hard time grasping exactly why are tags & fields different. For more information about duplicate points, see How does InfluxDB handle duplicate points? @R3Sist-SpM InfluxDB unique identifies points by their timestamp, measurement, and tag set. In Influx HTTP API you can specify precision of input timestamp data with an optional query parameter (see InfluxDB HTTP API reference). 2: 1127: November 16, 2022 Home ; Categories ; Guidelines ; We are new to InfluxDB, and are struggling to understand the query performance difference between a "tag" and a "field" for storing simple, time-stamped measurement values (literally, time series data). Can you check the flowfile contents in NiFi (pause the PutInfluxDB processor and List Queue on the incoming connection to see individual flowfile values) to see if a sensor value is present? – Andy The goal is to create a timestamp from the date and time and adding 0 milliseconds for the first line of data , 2 milliseconds for the second line, 3 milliseconds for the third and so on Later i want to use thsi timestamp as the index to I want to write Telegraf config file which will: Uses openweathermap input or custom http request result { "fields": { "humidity": 97, "temperatur Ok so i tried out the following query (for demo purposes): SHOW TAG VALUES CARDINALITY ON "api_requests" FROM "requests_stats" WITH KEY = "api_path". This is as per the InfluxDB design. I’m storing data in an influxdb using python, I can see that the data is stored the correct way. ; For more information, see join data requirements. influxdb. I’m collecting monthly sums from various energy counters in an InfluxDB. Use line protocol format to write data into InfluxDB. But in some cases I can have several points with the same Is it possible to write multiple fields for a given timestamp in Influxdb or Influxdb is not meant to be used like this? No, there is no option how to write multiple same fields with I am trying to write a query that will group my table by timestamp and get a delta between field values of two different tags. > select * from "EVENT_LIVE" name: EVENT_LIVE time GROUP_ID COUNT ---- ----- ----- 1531008000000000000 84 2 1531008000000000000 9 8 1532822400000000000 249 1 1534636800000000000 43 1 1534636800000000000 68 1 Thanks for your answer. Example: Measurement name: sample if i try to insert multiple points without a timestamp, only the last one is used. Learn the basics of curl with the HTTP Scripting Guide. Can someone help? thenemesis584 December 27, 2022, 9:35am The timestamp of each records corresponds to the beginning of the range and not the time when the event occurs. So, I have a _measurement "plug" with a field "value". Subtraction rules for numeric types. There are also additional tags that qualify the InfluxDB expects/defaults to nanosecond precision. InfluxDB 2. This is a snip showing the raw data in InfluxDB: I’ve highlighted the val Now I got a specific timestamp for each point I want to use as the InfluxDB keys/timestamps but whatever I try - it keeps on adding the system time of my host device (But as I'm working with historical data I need to adjust the timespecs). inner() to join the two streams together. Values of a tag are called “tag values”. 2: 1130: November 16, 2022 Counting number of groups. I have stored their speed and vehicle number as tags and rest as fields. I am trying to use 'tags' in the 'Measurements & Tags' I need to get the highest (aka most recent) timestamp for a specific Measurement in InfluxDB 2. But now I don't want to display the value but the timestamp in the cell when the first occurence was: Hi, @Anaisdg Total newbie here. _field, suffix: ""{suffix}"")"). Understanding the concept of a series is essential when designing your schema and when working with your data in InfluxDB. how can join two measurement of same database with respect to timestamp in influxdb database. I like separate tags since that lets me sum() by host or by application, for example. Select Last From Different Tag. But I can’t figure out how to get all records for a measurement between to timestamps. I have electricity consumption data in InfluxDB v2. 9: 4280: May 21, 2021 SELECT sum() FROM SELECT Equivalent. The ‘column name’ of a tag is called a “tag key”. This TL;DR assumes you have registered for an InfluxDB Cloud account. 1. A wide variety of areas are measured, such as the fill level of a waste garbage can or the meter I have below like data in influx where same Name data (A1, A2) can be available for multiple time. I have some measurement data in my influxdb database which I can query with: Tags. Hi, I am using Influx 1. 0. Use join. The current model you are using is not leveraging InfluxDB's indexing capability and when you are query against the fields, you are hammering the systems by full table scan ("strings. unpivot In InfluxDB all points having same tag values and timestamp even when having different field values are considered to be duplicate. temperatures from iot sensors (on different locations). Here is an example of line I have a db of hydrological data. 3: 6928: July 9 I'm trying to retrieve the sum of same values that has the same timestamp. Define the left and right data streams to join:. It doesn’t index tag values or field values. value from cpu_load as hosta inner join cpu_load as hostb where hosta. i have my measurement in influxDB as given below. This is not the same as the timestamp on the point itself. They are provided via MQTT/JSON and processed by Telegraf. Data points contain tags and fields. Provide the following required Tags. ) Hello! First off, I’m new to influxdb. In InfluxDB, the primary key for a row is the combination of the point’s timestamp and tag set - the collection of tag keys and tag values on the point. However, in some cases (rarely) the data need to have a nanosecond precision. and a timestamp. Thank you for your fast and clear response. 1 Like So if today you add a forecast for 2 days later, the age_h tag becomes 48. Line protocol. Is this possible or will everything need to be in nanoseconds then? Will it affect the storage size needed (I have a lot of data and try to minimize the storage needed as much as possible). This query yields a number 281 which is accurate. I can pull data points, including contemporaneous timestamps, for a each data point for a whole day (about 280 points) from the inverter manufacturers cloud and populate my bucket with the data I am sending data to an InfluxDB database using the Python client library. I have tried to find the answer to this question but cannot find it: what’s the difference between. 000-50. That means, you want to have data at least for every 30 minute, whether the data was inserted by the data source or You cannot store more than one point with the same timestamp in a series. For me, they represented ‘columns’ where you could store exactly the same data. The sensors are queried e. Overwriting in the Case of the Same Timestamp and Same Tag(s) Now let’s slightly change the scenario described above. I try to send data through Postman. The tags are driver, location, and train. There is a well-defined "time" field, Simply specify a timestamp All this datas have the exact same timestamp. For example, here’s a single point: name: census ----- time butterflies honeybees location scientist 2015-08-18T00:00:00Z 1 30 1 perpetua InfluxDB adopts the tag-field model where tags are indexed while field values are not. I’ve tried also with timestamp as tag, but same, no errors and timestamp doesn’t write to influxdb, nothing happens, every other field or string is inserting normally. Best Regards / Rasmus Tags. The InfluxDB v3 product line has seen significant enhancements in query performance and has made new management tooling available. Stack Overflow. Discussions. . Specifically, we need to store sensors that have a unique ID and a fixed installation location. The same question has been asked for other flavours, for example here in MySQL. There you can set the connection data and the topics to listen. Create a database using the InfluxDB API. I have two files in the first the timestamp (epoch) is in second precision e. Which method you use depends on your desired behavior: inner (Default): Drop any rows from both input streams that do not have a matching row in the other My question: how can I most efficiently fetch the last points/records for all device_ids (tag), without providing a WHERE clause on device_id? Preferably in one command, so I can remove the foreach iteration. 1004002Z The mechanism for specifying the desired time precision is different for the CLI and HTTP API. since they all have the same timestamp, I only get the entry with Level=10. The ∆ is typically below 1 millisecond whereas the JSON events are several seconds apart, so detecting should be I wonder how can I use these timestamp in my data as the X-axis value in a Grafana Time Series visualization instead of the time data However, this solution requires creating multiple database (or measurements in InfluxDB) of the same data with different inserted time. Is it a limitation of influx that only one point can exist with the same tags and timestamp? Yes, this is by design. These values should be grouped by month, but it They will have different tags, so they are not overwri Skip to main content. 5. More convenient would be a representation as ISO string (“2021-04-12T20:11:22Z”), as it is used in the outputs of the database. However, it doesn't make any difference what I choose here, as it will throw me the same Understanding the concept of a series is essential when designing your schema and when working with your data in InfluxDB. Using DISTINCT() with the INTO clause can cause InfluxDB to overwrite points in the destination measurement. host = 'hostb. The data at hand has a two-dimensional index, so the combination of of two tags is needed to distinguish the object (think of Linux data by host, by application, by process). I have checked with below things in influxdb: select hosta. every other minute. Adding a random number as a tag prevents influxdb from overwriting points with the exact same tags If the points have the same timestamp, but different tags, they’ll both be written. A point is uniquely identified by If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the new field set, where any conflicts favor the new field set. If you submit a new point with the same measurement, tag set, and timestamp as an existing The sensors don't send their data at the same time, which means that a given timestamp might have . For SELECT statements with a GROUP BY time() clause, the default time range is between 1677-09-21 00:12:43. A point includes the series key, a field value, and a timestamp–for example, a single point from the sample data:. I hope this InfluxDB blog post helps alleviate some confusion around: What Annotated CSV is How the group key affects the table stream output; And how to ungroup your data to perform aggregations across fields, tags, and tables in a stream; If you are using the InfluxDB v2 and need help, please ask for some in our community site or Slack channel. Discover tips and tricks to use while implementing InfluxDB. Does it have to be the exact same one or within the specified aggregateWindow (or more specifically: A set of tags is called a “tag-set”. having lots of data. Each stream should have identical group keys. You report fieldA with tagset, and then report field B with the same tagset, but with a different timestamp. This often results in unexpected behavior when querying data. These enhancements include an operational dashboard to monitor the health of your InfluxDB cluster, single sign-on (SSO) support in InfluxDB Cloud Dedicated, and new management APIs for tokens and databases. In this case I cannot help because I do not have example string data like yours but you can try it on your own. Why a 95%CI for difference of proportions and a 2x2 Chi-square test of independence don't agree It looks like the sensor tag doesn't have a value specified in the fields element. It appears the influx will support multiple data types on the same field. InfluxData Community Forums Select Last From Different Tag. First, I seeded a bucket named trains with data points containing train data using the write endpoint. Avoid using the same name for a tag and field key. 1: 1786: December 23, 2021 InfluxDB 1. org'; If you want to find for each window the difference between the first and last values you can use the spread function. LoicRaillon November 24, 2021, 7:27am 3. But I am making I have a problem with the write to InfluxDB batch as they will all have the same timestamp?) All my entries in the array looks like this, and I think this is I have selected milliseconds under Advanced in the Influx batch node. 0 If you don't use tags, then using the same timestamp will definitely result in one data point. If you submit Line Protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the new field set, where any conflicts favor the new field set. joao25 July 4, 2022, 1:03pm 1. 1 Like The query returns the number of unique field values in the level description field key and the h2o_feet measurement. 8 query help (show all values with same timestamp, and specific tag) InfluxQL. I hardcoded the costs into the dashboard using a math function in the InfluxDB data selection: There you can see I to existing measurement. value + hostb. Column labels do not need to match, but column values do. P. But this information is displayed only via the table widget and not single stat widget. Avoid the same name for a tag and a field. But now I don't want to display the value but the timestamp in the cell when the first occurence was: Hi All, I'm new here but have spent the last few days attempting to write data to InfluxDB. I need to create a query, that counts all different “tag2” for each “tag1” (group by) and only for the last saved timestamp. 7 with Flux technical preview (but the workflow is the same for the v2. Note: The following examples use curl, a command line tool that transfers data using URLs. This means that when writing twice the same combination timestamp + tag keys with a different field value every time, influxDB will only keep the last one. For points that have the same measurement name, tag set, and timestamp, InfluxDB creates a union of the old and new field sets. If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the To explore the pivot function, I used InfluxDB v1. Hi there, Just started to work with Influxdb 2. actual_time for the sake of an example) holding the explicit timestamp value. Then analyze your data and how it can fit into those I want to join two different measurement of same database. influxdb, query, flux. 2. 0 in combination with node. I have a bucket “energy” and a measurement “inverterData” and data points with one of two tags “SD12345678” and “SD23456789”. This let me have points "in the future". Prometheus shares the same tag set data model as OpenTSDB with some minor enhancements and so in this blog, we will not address OpenTSDB specifically. Hi! Could you point me out the way to have data from two measurements or update measurement_1 from the below two measurements in influxdb2? Expected a measurement_1 of 9 series of both measurements. To be precise spread calculates the difference between the minimum and maximum values (not first and last) but in an always-increasing series the two are the same. The second file has the timestamp in the same format, but when the data is loaded into Influx the timestamp looks like . What's next? Download and get started with InfluxDB v1. No by default you will get influxdb timestamp which is like 1465839830100400200 after using RFC3339 format you will get 2016-06-13T17:43:50. If you write a point to a series with a timestamp that matches an existing point, the field set becomes a union of the Hi, I’m using Grafana v10. The tag key scientist also has two tag values: langstroth and perpetua. Understanding the concept of a series is essential when designing your schema and working with your data in InfluxDB. Stack Exchange Network. What this means is that when we aggregate, it will perform aggregation within each separate group and keep the results separate. InfluxDB allows you to have I have several values being put into an InfluxDB under different topics. 2. I want to query the data for date-time range. If the points have the same timestamp, but different tags, they’ll both be written. This is impossible using InfluxQL. have a single data measurement with varID InfluxDB version used: 1. Each sensor has a unique ID, used as a tag in Influx. This type of join operation is common when joining two streams of time series data. Since there is no GROUP BY <tag> or GROUP BY * the tag set for both CQs is empty. Then the data will be loaded to the DB and accesible through the chronograf interface. I want to show all the data on the chronograf irrespective of the same time. I have to imagine this is one of the most common applications for Influx, yet still I'm not clear what is the smartest method. Precision setting in influx tells how to treat input timestamp data. Now I got a specific timestamp for each point I want to use as the InfluxDB keys/timestamps but whatever I try - it keeps on adding the system time of my host device (But as I'm working with historical data I need to adjust the timespecs). i assume this is because they are all sharing the same timestamp. Line protocol is InfluxDB’s data input format. So each 12-16 min i send data to the influxDB with informations about several hosts. I wrote a cell in the influxdata panel to find the first occurrence where the measurement is above 17°. You will get a series of values for the same timestamp but they will have different prediction age_h and different accuracy The query returns the number of unique field values in the level description field key and the h2o_feet measurement. 0 Beta; Schedule a FREE 20 minute consultation with a Solutions Architect to review your InfluxDB project; Attend one of our FREE virtual training seminars. Tags can only be a string type and they perform role as a data keys/indexes - ask yourself if you are And the next revision to 2 (but keep the same timestamp). I have successfully written data to the InfluxDB, but not in the format that I'd like. I need only latest time stamp data (row 3,4,5) if same data is available in multiple time stamp and the new data (A3). Modified 9 years, 4 months ago. The same taxonomy repeats for fields. To create a database send a POST request to the /query If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the new field set, where any conflicts favor the new field set. You could overwrite the point with some other values by inserting in the measurement a point with the same timestamp and tag set:. Collect, analyze, and predict in real time Both tag keys and tag values are stored as strings and record metadata. If two points have the same measurement name, tag set, and timestamp, they are considered as duplicate points. Hello, thanks for looking. For example, here’s a single point: name: census ----- time butterflies honeybees location scientist 2015-08-18T00:00:00Z 1 30 1 perpetua You are currently viewing documentation specific to InfluxDB Cloud powered by the TSM storage engine, which offers different functionality than InfluxDB Cloud Serverless powered by the v3 storage engine. Now the ma I have some measurement data in my influxdb database which I can query with: Tags. I want to, if possible, use a schema that allows me to query: "for each trade on market X, find the best ask/bid on market Y whose timestamp is <= the timestamp of the trade". This though is not precise. Can someone help? thenemesis584 December 27, 2022, 9:35am i only need the last tag value and their timestamp in date/time format. You didn't describe how your put data into table. Sorry for my long explaination! yosiasz January 12, 2024, 10 hi @kilik52, influxdb is grouped by measurement+tags by default. To refer to a measurement in an InfluxDB is getting a major upgrade with the new IOx data Now, if we do a new write, but with a different tag name, similar to adding a field, this will update the table with a new column for Configure your MQTT broker in the telegraf. I would like to construct a expression / query to display virtual value of timestamp difference between two one after the I guess downsampling with aggregateWindow and fill could work. host = 'hosta. Are you using I want to store trades as well as best ask/bid data, where the latter updates much more rapidly than the former, in InfluxDB. The two can have different use-cases. Example. Be aware that it will ignore all string values, except the ones you define in the json_string_fields parameter. But in some cases I can have several points with the same timestamp and tags, and in the extreme case there could be hundreds of such points. If your data has the same fields According to faq, if timestamp and tags are the same but fields are different, Influx will only store the new field set. S i got this response ": bad timestamp\nunable to parse" is there are simple way to convert a timestamp to RFC 3339 format ? Thanks Functions like difference require an aggregate query (group by time()) as well as an aggregation function for the values within the grouped window (mean above). Regards. Difference then shows the differences between sequential aggregated values for the time period specified, additionally grouped by the two tag values specified. 145224194 and 2262-04-11T23:47:16. 000 meters (time series) per bucket and each meter performs 4 measurements per hour. 1: 326: November 16, 2023 How to sum multiple tags? InfluxDB 2. How can you query data without SELECT clause? When querying over influxdbs HTTP API it expects one of the following keywords first: SELECT, DELETE, SHOW, CREATE, DROP, EXPLAIN, GRANT, REVOKE, ALTER, SET, KILL. As I have multiple points (data) at the same timestamp it displays only one data for a single timestamp. Hi, I’m using Grafana v10. Timestamp value on input is always integer (not rfc3339 string). fuba77 August 21, 2023, 11:10am 1. x and in one measurements we have stored by mistake the timestamp of each row as a tag value every 10 seconds for 10 days. Importantly, note that forecast also includes a forecast_time tag, which stores the time the forecast was made, which is usually within the past hour or so. All points in _value do not have the same data type, and I get this error, how can I fix it? I want to use the same field The InfluxDB v3 product line has seen significant enhancements in query performance and has made new management tooling available. have a single data measurement with varID It's entirely possible. If you write a point to a series with a timestamp that matches an existing point, the field set becomes a union of the old and new field set, and any ties go to the new field set. Maybe you know in what format i need to push the data to influxdb to make the influxdb understand that this is timestamp data. Labs. hasSuffix(v: r. InfluxDB Cloud Dedicated indexes tag keys, field keys, and other metadata to optimize performance. orb' and hostb. In my particular case I have had float data converted to string data. You're using seconds, by the looks of it. Is possible to query only for the last value (or n-th value) of the results of a query? For example, in the query: SELECT value FROM response_times WHERE time > now() - 1h limit 1000; Is poss I am trying to show a tabular format for all the data I have in my influxdb on chronograf. The Time Precision is set to mS which is what the timestamp resolution is downloaded from the cloud and the same as the Influxdb 1. 0 Given a time series db that is used for storing e. The only difference between the following point in the line protocol format and the point in the preceding example is that the following point does not contain a timestamp: When TSDB for InfluxDB® writes the point to the database, the point uses the local timestamp of the server instead of 2016-06-13T17:43:50. 1 If userid is a tag then it should be something like. Point. 2: 1141: November 16, 2022 Home Import the join package. Finally, a point is the field set in the same series with the same timestamp. I want save time as timestamp format from influxdb admin interface . Suppose if vehicle 1 and vehicle 2 has same timestamp, will both get stored OR only one of them will be stored ? I have been checking that Hello! First off, I’m new to influxdb. All measurements you ask are different series of data - so they are not grouped together in one table. The tag key location has two tag values: 1 and 2. Ask Question Asked 9 years, 4 months ago. Common Issues with DISTINCT() DISTINCT() and the INTO clause. @R3Sist-SpM InfluxDB unique identifies points by their timestamp, measurement, and tag set. Collectives. Instead of using only unique timestamp + tag I have a time serie like GasSummaryConsumption. You are currently viewing documentation specific to InfluxDB Cloud powered by the TSM storage engine, which offers different functionality than InfluxDB Cloud Serverless powered by the v3 storage engine. These values should be grouped by month, but it seems that timestamps differ by milliseconds, so these are considered separate points in time: The three bars on the left are from January first while the three (or rather four) on the right are from InfluxDB Cloud Dedicated indexes tag keys, field keys, and other metadata to optimize performance. time_query = from I have converted DateTime to timestamp using datetime library timestamp() It could be that the time zone is different that you are passing due to which no results are available during that time: Timestamps. Grafana Dashboard --> influxdb-timeshift-proxy --> InfluxDB Here are descriptions of the two "-->" in the above schematic: The --> on the left: I created a Grafana Datasource to point to the tcp port of the influxdb-timeshift-proxy; The --> on the right: The "influxdb-timeshift-proxy" startup configuration points to the InfluxDB server. I am trying to fetch the tag values for a given measurement. In a tag set data model, every time series is uniquely identified by a metric name (measurement in InfluxDB nomenclature) and a set of labels (tags in InfluxDB nomenclature ). DISTINCT() often returns several results with the same timestamp; InfluxDB since they all have the same timestamp, I only get the entry with Level=10. If you ever look at that point again in the future, you know that the value was predicted 48h before the actual timestamp of the value. About; because the data point has the same timestamp as the first, since you This means that 95-100% of all points come from Control Modules. This question is specific to InfluxDB. The result is two rows: Is it possible to write multiple fields for a given timestamp in Influxdb or Influxdb is not meant to be used like this? No, there is no option how to write multiple same fields with same tags for a given timestamp. See Time Syntax for information on how to specify alternative time ranges in the I have a problem with the write to InfluxDB batch as they will all have the same timestamp?) All my entries in the array looks like this, and I think this is I have selected milliseconds under Advanced in the Influx batch node. You cannot store more than one point with the same timestamp in a series. influxdb, query. 1: 579: query, flux. This fixes my problem and I can see all the events. Now the ma Is it possible to write multiple fields for a given timestamp in Influxdb or Influxdb is not meant to be used like this? No, there is no option how to write multiple same fields with same tags for a given timestamp. 5. You will get a series of values for the same timestamp but they will have different prediction age_h and different accuracy If a point does not have any tags the timestamp is the unique key and will be overridden if a new point with the same timestamp with different tags. In other words getting all tags and fields like a python dict. If I want to get delta between tag 'a' and tag 'b', it will Then if you add num to the group key, you’ll get a separate table for each distinct value of num: data |> map(fn: (r) => ({r with num: 1})) |> cumulativeSum(columns: ["num"]) |> Alternative way is to pivot and then fill missing values using previous value. For most SELECT statements, the default time range is between 1677-09-21 00:12:43. It overwrites the others. INSERT angle,userid=1 product=dname,value=5. Is such query available in influx? this query only gives one record, SELECT time, Name, value FROM "data" order by time desc limit 1 We are introducing InfluxDb into our organization, to get the latest firmware version for that particular device id and combine it with the rest of the missing values tags and fields to form "missing_values_with_firmware". should they each get a different timestamp or is this an invalid use case? fyi: i don't A point is uniquely identified by the measurement name, tag set, and timestamp. In particular, the usage of tags, fields and measurements enhances the time series database and helps answer your questions in a convenient and fast way, if you know what to do. Hi everyone, We are currently facing the challenge of storing various sensor data in an InfluxDB and do not know exactly how to name the measurements, tags and fields optimally. So even when you create windows using AggregateWindow() within each window, there is a group for each tag value which is why you are seeing the output that you Hi, @Anaisdg Total newbie here. If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the Hello All, I have a network of sensors passing data to influxdb. I'm not sure how it's working under the hood, but I'm successfully using difference() in a CQ in InfluxDB 1. Furthermore I read that you can specify the timestamp in the “Line Protocol” in different resolutions (ns/us/ms/s) as integer. 0 Alpha release). SUM(LAST()) How is multi-sentence dialogue in prose punctuated when dialogue tags do not end the sentence? The fields are not part of the uniqueness. 1: 1364: December 19, 2018 Home This is still (2015 - 2020) not possible in InfluxDB - see ticket 3210. Each CQ is writing to the same measurement metric_agg. Meaning that the query for between 08:00:00 and 08:00:01 without a group by and the query with a group by time(1s) for same period will give same result. 2019-08-18T00:00:00Z census ants 30 portland mullen. Insert them with exactly same timestamp and tag values to get existing data records extended with these new price columns ready to be used in grafana: INSERT smartmeter,tagA=tagAvalue,tagB Tags. In the data above, the tag set is The varID is also a tag, even if redundant. You'll need to modify your curl command with the precision query arg: So if today you add a forecast for 2 days later, the age_h tag becomes 48. In case of existing Hi, I am using influxdb V2. This is as What Grafana version and what operating system are you using? Grafana 9. 429856Z The tags are part of the index (while fields are not) and therefore the combination of a measurement with the tags leads to 3 different time series, each containing a single value (at the timestamp when the data was registered). Data Workloads Real-Time Analytics. 854775806Z UTC. Proposal: It would be great if InfluxDB did not overwite timeseries with the same timestamp and tags, but instead added them and ideally had a way to handle and even for the Reporting fields at different times with different timestamps creates distinct rows that contain null values–for example: You report fieldA with tagset, and then report field B with the same tagset, Try add a unique random number or a sequence number as a tag. 7 and grafana I need to get difference between two unix timestamp in seconds, as per below query, SELECT $__to - “timestamp” as “DIFF” FROM (SELECT “ProjectRoom_time_unix” AS “timestamp” FROM difference() returns the difference between subsequent values. But this is somewhat inconvenient as some times I want to be able to easily query data across more than one varID. The data is collected after every single minute and has a timestamp value which is given by the IOT sensor. 4. With simple ‘s’ precision - if I send 5 files to influx with Under one measurement you can have multiple tags and value fields. If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the Avoid too many tags. You could then join the two streams and calculate the latency, like timestamp | temperature | device 2020-03-24T20:17:04 | 22. Our users are able to select any subset I am new to influxdb. but is not possible it show time in date format {"database": Tags. Updated for clarity I have one tag key defined (confusingly The tags are part of the index (while fields are not) and therefore the combination of a measurement with the tags leads to 3 different time series, each containing a single value You wrote, that the data needs to have the same timestamp. Bucket. If you submit line protocol with the same measurement, tag set, and timestamp, but with a different field set, the field set becomes the union of the old field set and the You will see that InfluxDB is more than some tables; it is a window to the world of your data. Transform tab also allows you to parse data to different types. This article discusses methods for preserving data from two points with a common measurement, tag set, If you have the same tag values and timestamps but different field values then your points will get overwritten. 1970-01-01T00:00:01. I would like to understand the following and I have not been able to find anything in documentation. A point is uniquely identified by the measurement name, tag set, and timestamp. Stack Exchange Suppose you are doing the same query every 30 minute. If you consider the following data: I am sending data to an InfluxDB database using the Python client library. I can pull data points, including contemporaneous timestamps, for a each data point for a whole day (about 280 points) from the inverter manufacturers cloud and populate my bucket with the data We are in the final stage of going live with InfluxDB as our time series database but at the last moment, I ran into one critical issue about duplicate points being stored for single timestamp-tag pair. The advantage, at least from But I am surprised with the fact that you are expecting 3 values for a single timestamp (unless you have different TAG values, refer this documentation how to store In our system we have around 10. So i was wondering if d rather create one measurement like this : timestamp,iotid,temperature,humidity,pressure ----- In InfluxDB all points having same tag values and timestamp even when having different field values are considered to be duplicate. Best Regards / Rasmus If you are new to InfluxDB, you might want to familiarize yourself with installing and writing data with InfluxDB first. Written data from node to influxdb by means of the influxdb node client. When trying to retrieve them, the database gets probably Write data into InfluxDB using the command line interface, client libraries, and plugins for common data formats such as Graphite. lixzhb raoh idx qdfn inm oatc fxyphp prdxha hvu zqx