I am using Grafana to show the number of entries added to the database every minute, and I would like to display the last recent fully counted value.
If I give the following command:
SELECT count("value") FROM "numSv" GROUP BY time(1m)
1615904700000000000 60
1615904760000000000 60
1615904820000000000 60
1615904880000000000 60
1615904940000000000 36
Grafana is going to display the last entry, which is still in the process of counting. How can I display the n[-1] entry, which has been fully counted?
Otherwise, how do I ask Influx to give me the same results excluding the last dataset?
P.S.: Using WHERE time > now() - 60s, etc... doesn't work.
Use "magic" Grafana time range math and select dashboard time range from now-1m/m to now-1m/m. That generates an absolute time range, which refers to last fully counted minute. Query is then standard with $timeFilter Grafana macro:
SELECT count("value") FROM "numSv" WHERE $timeFilter
Related
I run the following task in Snowflake to see which queries are candidates for inefficiency improvements:
select datediff(second,scheduled_time,query_start_time) as second, *
from table(information_schema.task_history())
where state != 'SCHEDULED'
order by datediff(second,scheduled_time,query_start_time) desc;
However, I frequently see the seconds a query took to run change from day to day. How can I modify this query in Snowflake to get all the historical runs from task history and average their seconds to get a fuller picture with less variance?
The documentation says it pulls the last 7 days but in practice it is only pulling the last 2 days based on the output's scheduled_time (each of my tasks run every 12 hours). I'd like to get the average seconds each task took over the last 30 days and sort them.
The documentation says it pulls the last 7 days but in practice it is only pulling the last 2 days based on the output's scheduled_time (each of my tasks run every 12 hours).
Task history
RESULT_LIMIT => integer
A number specifying the maximum number of rows returned by the function.
Default: 100.
To get more rows the RESULT_LIMIT should be defined:
select datediff(second,scheduled_time,query_start_time) as second, *
from table(information_schema.task_history(RESULT_LIMIT =>10000))
where state != 'SCHEDULED'
order by datediff(second,scheduled_time,query_start_time) desc;
ACCOUNT_USAGE.TASK_HISTORY provides data for the last 365 days.
SELECT datediff(second,scheduled_time,query_start_time) as second, *
FROM snowflake.account_usage.task_history
WHERE state != 'SCHEDULED'
ORDER BY datediff(second,scheduled_time,query_start_time) DESC;
how to get the hourly calculation according to the earliest start time and earliest stop time.
the condition is if the driver has the same name of drop address. the hourly calculation will show for all. The 0.00hrs should apply to all riders with the same drop address regardless of how many in the same ride. I attached a screenshot and which type of output I needed it's shown in highlighted areas.
enter image description here
Use DATEDIFF function to calculate the number of minutes or seconds between start and end times and divide it by 60 or 3600 to get the hours.
Why using XPathSelectElements in c# try give me some example. and try to give me Xdocument all method what is the work and some example?
After creating date first approach Entity framework how to add table columns, a procedure from an existing database in ENTITY Fream work
I am creating a report in SSRS that shows the duration of phone calls.
In my T-SQL script I am using:
CONVERT(VARCHAR,DATEADD(second,Call,0),108)AS[Call Duration]
which works nicely and shows the time as 00:03:20, for example.
However when I create a table in SSRS and try to sum all the different time values it just says #error in the report. I need the report to be able to add these time values up so I can give a total per switchboard operator. So for example if officer x took three calls and they all lasted 3 minutes then I'd need the total to say 00:09:00
Do you know of a way where I can display the total time spend rather than having to list each value separately? I can sum up the number of seconds for each call - so for example get a total of 540 seconds - but need to show this as hh:mm:ss
Thanks
The report is throwing an error because you are trying to sum up a varchar value. Rather than trying to format your data in your SQL query, simply return the values in their raw form to your SSRS report and let your presentation layer format the data for you.
Rather than using a dateadd, it seems your call length is already held within your Call column? If that is the case, simply return that column to your report, either as detail rows to be summed if the detail is required elsewhere in your report, or pre-aggregated in your SQL as this will perform better.
You can then format your Call Duration as follows:
=format(today().AddSeconds(Fields!Call.Value),"HH:mm:ss")
If you aren't aggregating your call seconds in your SQL query, you will need to do this in your expression:
=format(today().AddSeconds(sum(Fields!Call.Value)),"HH:mm:ss")
Obviously this method assumes you won't have any calls longer than 24 hours. If that is a possibility, you will need to calculate the hours, minutes and seconds to be concatenated together.
What am I doing wrong in this query?
SELECT * FROM TreatmentPlanDetails
WHERE
accountId = 'ag5zfmRvbW9kZW50d2ViMnIRCxIIQWNjb3VudHMYtcjdAQw' AND
status = 'done' AND
category = 'chirurgia orale' AND
setDoneCalendarEventStartTimestamp >= [timestamp for 6 june 2012] AND
setDoneCalendarEventStartTimestamp <= [timestamp for 11 june 2012] AND
deleteStatus = 'notDeleted'
ORDER BY setDoneCalendarEventStartTimestamp ASC
I am not getting any record and I am sure there are records meeting the where clause conditions. To get the correct records I have to widen the timestamp interval by 1 millisecond. Is it normal? Furthermore, if I modify this query by removing the category filter, I am getting the correct results. This is definitely weird.
I also asked on google groups, but I got no answer. Anyway, for details:
https://groups.google.com/forum/?fromgroups#!searchin/google-appengine/query/google-appengine/ixPIvmhCS3g/d4OP91yTkrEJ
Let's talk specifically about creating timestamps to go into the query. What code are you using to create the timestamp record? Apparently that's important, because fuzzing with it a little bit affects the query. It may be relevant that in the datastore, timestamps are recorded as integers representing posix timestamps with microseconds, i.e. the number of microseconds since 1/1/1970 UTC (not counting leap seconds). It's also relevant that dates (i.e. without a time) are represented as midnight, i.e. the earliest time on that day. But please show us the exact code. (It may also be important to show the actual content of the record that you're attempting to retrieve.)
An aside that is not specific to your question: Entity property names count as part of your storage quota. If this is going to be a huge dataset, you might pay more $$ than you'd like for property names like setDoneCalendarEventStartTimestamp.
Because you write :
if I modify this query by removing the category filter, I am getting
the correct results
this probably means that the category was not indexed at the time you write the matching records to the data store. You have to re-write your records to the data store if you want them added to the newly created index.
I have a WPF app, where one of the fields has a numeric input box for length of a phone call, called ActivityDuration.
Previously this has been saved as an Integer value that respresents minutes. However, the client now wishes to record meetings using the same table, but meetings can last for 4-5 hours so entering 240 minutes doesn't seem very user friendly.
I'm currently considering my options, whether to change ActivityDuration to a time value in SQL 2008 and try to use a time mask input box, or keep it as an integer and present the client with 2 numeric input boxes, one for hours and one for minutes and then do the calculation to save it in SQL Server 2008 as integer minutes.
I'm open to comments and suggestions. One further consideration is that I will need to be able to calculate total time based upon the ActivityDuration so the field DataType should allow it to be summed easy.
The new time datatype only supports 24 hours, so if you need more you'll have to use datetime.
So if sum 7 x 4 hour meetings, you'll get "4 hours" back
How the DB stores it is also different to how you present and capture the data.
Why not hh:nn type display and convert in the client and store as datetime?
Track the start and end time, no need to mask out the date, since the duration will just be a calculation off of the two dates. You can even do this in "sessions" such that one meeting can have multiple sessions (i.e. one meeting that spans across lunch, that shouldn't be counted toward the duration...).
The data type, then is either datetime or smalldatetime.
Then to get the "total duration" it's just a query using
Select sum(datediff(mm, startdate, enddate)) from table where meetingID = 1