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How to count total time from start date and end date in mongoose?


How to count total time from start date and end date in mongoose?

By : tarkastov
Date : January 11 2021, 05:14 PM
This might help you From your question, it seems that, for each session ( i.e. one connect and disconnect ) you are creating a document for the user in DocSchema [ Let, call the model DocSchema ]. And you want to know the total time of a user. You can use aggregate.
This is an example aggregation that finds the total time for the userId searchKey
code :
Schema2.aggregate({
  $match: {
    userId: searchKey,
    $project: {
      diff: {
        $subtract: ['$disconnected', '$connected']
      }
    },
    $group: {
      _id: 'justAGroupName',
      total: {
        $sum: '$diff'
      }
    }
  }
});


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How to find the total time the machine is idle on the primary key, knowing the start date and end date?

How to find the total time the machine is idle on the primary key, knowing the start date and end date?


By : user2287809
Date : March 29 2020, 07:55 AM
will be helpful for those in need How to find the total time the machine is idle on the primary key, knowing the start date and end date ?
code :
select  id, TO_TIMESTAMP (SECOND_DATE, 'YYYY-MM-DD HH24:MI:SS.FF') - TO_TIMESTAMP (FIRST_DATE, 'YYYY-MM-DD HH24:MI:SS.FF') tdiff from t;
Query data in certain period of time, and group by each date and count total data for each date

Query data in certain period of time, and group by each date and count total data for each date


By : highbrowed
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Need some help in linq , Try this:-
code :
var query = logs.Where(x => x.LogDate > new DateTime(2014, 09, 20) && x.LogDate < new DateTime(2014, 10, 12))
                                .GroupBy(x => x.LogDate).Select(x => new { LogDate = x.Key, Count = x.Count() });
How to implement total elapsed time from start to end date using php and javascript

How to implement total elapsed time from start to end date using php and javascript


By : Vijay Adhikari
Date : March 29 2020, 07:55 AM
hop of those help? What about storing the data in a table with the structure:
id, worker, start_timestamp, end_timestamp
code :
// convert to unix timestamps
$firstTime=strtotime($firstTime);
$lastTime=strtotime($lastTime);

// perform subtraction to get the difference (in seconds) between times
$timeDiff=$lastTime-$firstTime;
SQL How to query a record by date where the date is stored as a start date with a repeated count and interval of occuran

SQL How to query a record by date where the date is stored as a start date with a repeated count and interval of occuran


By : Cory Snider
Date : March 29 2020, 07:55 AM
this will help I think it is this, what you are looking for:
--Create a function, which will return a list of ints between a start and end with a given step-width.
code :
CREATE FUNCTION RunningNumbers(@start INT,@end INT,@step INT)
RETURNS TABLE AS

--Create a List of up to 1.000.000.000 rows on the fly
--This is limited by start and end parameter
RETURN
 WITH x AS(SELECT 1 AS N FROM(VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) AS tbl(N))--10^1
,N3 AS (SELECT 1 AS N FROM x CROSS JOIN x AS N2 CROSS JOIN x N3) --10^3
,Tally AS(SELECT TOP(@end-@start +1) ROW_NUMBER() OVER(ORDER BY(SELECT NULL)) + @start -1 AS Nr FROM N3 
          CROSS JOIN N3 N6 CROSS JOIN N3 AS N9)
SELECT Nr*@step AS Nr
FROM Tally;
GO
DECLARE @YourTbl TABLE(ID INT,[DATE] DATE,[REPEAT] INT,[INTERVAL] INT,[VALUE] INT);
INSERT INTO @YourTbl VALUES
 (1,{d'2016-01-01'},1,1,10)
,(2,{d'2014-01-01'},12,3,15)
,(3,{d'2015-01-01'},13,1,20)
,(4,{d'2014-04-01'},12,6,100);
DECLARE @SearchDate DATE={d'2016-10-01'};
WITH RangeList AS
(
    SELECT tbl.*
          ,DATEADD(MONTH,Months.Nr,tbl.[DATE]) AS IntervalPoint
    FROM @YourTbl AS tbl
    CROSS APPLY dbo.RunningNumbers(0,tbl.[REPEAT]-1,tbl.[INTERVAL]) AS Months
)
SELECT *
FROM RangeList
WHERE IntervalPoint=@SearchDate
GO
DROP FUNCTION RunningNumbers;
How to count rows with Dates and display the unique label date and the total count of events for that date

How to count rows with Dates and display the unique label date and the total count of events for that date


By : vadim.duran
Date : March 29 2020, 07:55 AM
To fix this issue Assuming date is in column Col4: =QUERY(IMPORTRANGE("10OAEb2fBfvAqCdp1yyuTBQ4NErtxtOyJ29whFkvVqaw"; "Data!B:P"); "SELECT Col4, COUNT(Col1) group by Col4";1)
You need to count some other column (Col1).
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