Querying For Job Duration
Apr 13, 2007Hi!
Does anyone know how to query for the job duration of all jobs in a server?
Thanks!
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Transact SQL :: Get Total Request Duration From Multiple Task Duration?
Jun 4, 2015I have the following SQL query
SELECT
[Req_ID]
,[Service_Name]
,[Req_Started_Date]
,[Task_Name]
,[Task_Status]
,[Performer_Full_Name]
[code]....
Which works fine, but what I need to calculate the total duration of a request based on the duration of the tasks completed in the request based on Req_ID. I would like to use the CASE statement I have to determine the SLA_Mins for each task and add them together to get total request SLA_Mins.
Below is the create table schema and data
GO
/****** Object: Table [dbo].[MidrangeOtherSourceControl] Script Date: 06/03/2015 18:13:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[MidrangeOtherSourceControl](
[Req_ID] [float] NULL,
[Service_Name] [nvarchar](255) NULL,
[code]....
Duration In Sql Profiler
Jan 20, 2005If monitoring for duration with sql profiler, what does the number represent ie 2733906 is it milliseconds, thousandths, looked in BOL no clear definition
View 2 Replies View RelatedSQL Profiler - Duration
Aug 1, 2002Can someone please tell me what unit of measurement the Duration column is in when running SQL Profiler? I assume milleseconds, but am not sure.
I'm trying to filter on this and want to be sure I'm not missing anything.
Thanks!
How To Run CAST On Duration
May 13, 2015I found this nifty code on stackoverflow that works well but I'm trying to send the results to a text file and the column lengths are huge. I used CAST for the first line and it worked great but I can't seem to make it work with duration. Here's the original code:
SELECT
j.name,
h.run_status,
durationHHMMSS = STUFF(STUFF(REPLACE(STR(h.run_duration,7,0),
' ','0'),4,0,':'),7,0,':'),
[code]....
how to run a CAST on DURATION?
Calculating Duration
Jan 18, 2007I am trying to get a query that will allow me to report the time taken to complete a certain training module.
The database itself does not have a duration field so I am tring to get the duration by using MIN and MAX. I can get the timing for when the module was opened and the time for the last mouse click on it, from this I need to be able to calculate the time taken to complete.
Query I am using to get the basic info comes from 3 tables so I have only attached the relevent output. Query used is as follow:
SELECT *
FROM PPS_SCOS, PPS_TRANSCRIPTS, PPS_TRANSCRIPT_DETAILS, PPS_PRINCIPALS
WHERE PPS_SCOS.SCO_ID = PPS_TRANSCRIPTS.SCO_ID
AND PPS_TRANSCRIPTS.TRANSCRIPT_ID = PPS_TRANSCRIPT_DETAILS.TRANSCRIPT_ID
AND PPS_TRANSCRIPTS.PRINCIPAL_ID = PPS_PRINCIPALS.PRINCIPAL_ID
AND PPS_SCOS.NAME LIKE 'MTM-106 The Dangers of Smoking'
AND PPS_PRINCIPALS.NAME LIKE 'Nigel Cordiner'
AND PPS_TRANSCRIPTS.TICKET NOT LIKE 'l-%'
ORDER BY PPS_TRANSCRIPT_DETAILS.DATE_CREATED
Output:
pps_scospps_scospps_transcript_detailspps_principalspps_principals
SCO_IDNAME DATE_CREATED PRINCIPAL_ID NAME
136850MTM-106 The Dangers of Smoking08:17:2516287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:17:2516287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:17:4016287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:18:2516287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:18:5716287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:19:1416287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:19:4716287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:20:2116287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:20:4416287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:21:2616287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:22:1316287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:24:5516287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:25:1216287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:25:2916287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:26:4916287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:27:0216287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:27:2916287Nigel Cordiner
136850MTM-106 The Dangers of Smoking08:27:4316287Nigel Cordiner
Have added the column heading and the tables the output comes from.
Relatively new to SQL so any help would be greatly received.
Need Help With Job-duration Query
Jan 24, 2008 I have a query that displays number of hours duration in a jobs by months matrix. Here is a simplified version of my tables.
CREATE TABLE jobhead (
jobnum varchar (14) NULL,
jobcompletiondate datetime NULL
)
CREATE TABLE labordtl (
jobnum varchar (14) NULL ,
clockindate datetime NULL ,
clockintime decimal(6, 2) NULL ,
)
Here's an abbreviated query.
SELECT h.JobNum,
(CASE WHEN MONTH(h.JobCompletionDate) = 1 THEN datediff(day,MIN(l.ClockInDate),MAX(l.clockInDate)) ELSE 0 END) AS JAN,
(CASE WHEN MONTH(h.JobCompletionDate) = 2 THEN datediff(day,MIN(l.ClockInDate),MAX(l.clockInDate)) ELSE 0 END) AS FEB,
...
FROM JobHead h
INNER JOIN LaborDtl l ON h.JobNum=l.JobNum
WHERE JobCompletionDate>='20070101' AND JobCompletionDate <'20080101'
AND l.ClockInTime<>0
GROUP BYh.JobNum
,h.JobCompletionDate
The query shows, for each job, the month in which the job completed, and the number of hours it took to complete. I€™m calculating the number of days€™ duration by doing a datediff between the oldest and newest clockindates. I need to ignore adjustment transactions in the labordtl table €“ these rows are easily identified as they have clockintime values of 0. So far, so good. Now here€™s my problem.
There are some jobs which have only one €śreal€? labor transaction €“ this could happen if the job only took one day to complete. Other labor transactions may exist for that job, but let's say they are adjustments which we can ignore -- the date they were entered should not extend the duration of the job. In this situation, my datediff between the oldest valid transaction and the newest, returns 0. I don€™t have to count hours between clockintime and clockouttime. The rule is simply that if there is only one "real" labor transaction, I need to count this as a 1 day job.
I thought a nested CASE statement or expression might be the way to go but I didn't make any real progress.
Any ideas to solve this problem would be appreciated.
How Do I Get Overall Package Duration?
May 20, 2006I'm developing a web app that displays the running packages and the total elapsed time. I'm calling GetRunningPackages() method and using the ExecutionDuration property of the returned package. The duration seems to be only for the currently executing container and not the entire package. Is there a way to get the duration of the entire package? Thanks.
View 2 Replies View RelatedHow To Store Duration In Database?
Nov 27, 2007Hi all, I want to find working duration between two datetimes in c#.i'm using following code... DateTime starttime = Convert.ToDateTime(Session["StartTime"]); DateTime endtime = DateTime.Now; TimeSpan duration = endtime - starttime; DateTime period = new DateTime(duration.Ticks); i want to store this duration in database through stored procedure, i've give datetime datatype to duration but it is giving error in conversion of TimeSpan to DateTime..Please help... Thanks
View 1 Replies View RelatedRun Duration On SQL Job Doubled After Conversion From 6.5 To 7.0
Nov 29, 1999SQL 6.5 - run duration 6-7 hours
SQL 7.0 - run duration 12-13 hours
175+ columns with total record size=570
4.2M records with tablesize 2.5G
It's a simple 'select into...' with some embedded logic from a work table with all char fields into the actual table converting char fields into various data types (int, datetime, real, etc.) Here is a sample of the code:
SELECT
LoanNum=CASE
WHEN ISNUMERIC(ACCT#)=1 THEN CONVERT(int,ACCT#)
ELSE NULL
END,
PaidToDt=CASE
WHEN PAIDDT = '0001-01-01' THEN NULL
WHEN ISDATE(PAIDDT)=1 AND SUBSTRING(PAIDDT,1,2) = '19' THEN CONVERT(smalldatetime,PAIDDT)
WHEN ISDATE(PAIDDT)=1 AND SUBSTRING(PAIDDT,1,2) = '20' AND SUBSTRING(PAIDDT,3,2) < '79' THEN CONVERT(smalldatetime,PAIDDT)
ELSE NULL
END,
.
.
.
INTO db.owner.tablename
FROM db.owner.wrktablename (NOLOCK)
Duration Too Long (opinions)?
Sep 15, 2004Hearing complaints from users about speed on db server (I have almost no control on design) it just has to work. Ran profiler looking for all sql statements over 4000 millsec and in one hour returned over 715 tsql statements. Over 300 of these were over 10000 milliseconds. THis is on an 8 way Dell with 8 gig of RAM. Looking for opinions, how bad does this look compared to other servers you are taking care of? Cache hit ratio is at 99 % and system queue length still under 1, but this does not look good.
View 2 Replies View RelatedHow To Disable A Trigger In Duration?
Feb 21, 2005Hello, everyone:
There is a trigger to monitor the modification on a table, and it turn on. For a special duration, I need to turn off this trigger to modify the table. And then turn on the trigger again.
Any help will be appreciated.
Thanks
ZYT
Help With Calculating Duration Time
Oct 14, 2005I have a table called Tickets which contains ticket information for a machine. Each machine can have more than one ticket number opened at the same time. The ticket number contains start date/time and end date/time of the ticket. Thereefore the table looks something like this:
Ticket_No (int)
Machine_No (int)
Description (char)
Start_Time (datetime)
End_Time (datetime)
I want to be able to calculate total duration time(in hours) that EACH MACHINE had a ticket open...but here is the tricky part. The total duration time that a machine had ticket open has to encompas any tickets that may fall in the same time period. For example:
If Machine A has a ticket open at 8:30 and the ticket is closed at 10:00. Meanwhile, Machine A had another separate ticket open at 9:30 which was closed at 10:30. In this case, the total duration time for this machine would be from 8:30 to 10:30 for a total of 2 hrs duration time.
Can anyone help me get started in tackling this problem or provide any examples?
DBCC SHRINKDATABASE Duration
Nov 8, 2006Is there anyway to tell how long this will run for -- or how far it has got? I have a large database that has just had most of the data removed. The command has been running for 8 hours and I have just stopped it to let something else run quickly. Any way of telling how much longer it will take?
View 7 Replies View RelatedSum Of Duration Between Time Records
Aug 6, 2013In my example, i have a table as below:
Time|Machine
2013-08-05 10:12:00 |M1
2013-08-05 10:15:00 |M1
2013-08-05 10:20:00 |M1
2013-08-05 10:11:00 |M2
2013-08-05 10:15:00 |M2
2013-08-05 10:16:00 |M2
2013-08-05 10:17:00 |M2
2013-08-06 11:12:00 |M1
2013-08-05 11:42:00 |M1
2013-08-05 12:02:00 |M1
I want to have a report for every machine by time that will show how long each machine worked. The result is something like below:
M1|8 (minutes)
M2|6
M1|50
SQL Agent Job Failures And Duration
Nov 6, 2003/*
This SP has 2 functions.
a) if @method='duration' gives the average run duration in minutes for successful jobs
b) if @method='failures' displays failures/cancels/still executing jobs
It defaults to today's date. Specify @xdate for a different date
-- Louis Nguyen
*/
CREATE PROCEDURE UtilityJobsHistory
(
@method varchar(100)='duration'
,@xdate datetime=null
)
AS
set nocount on
set transaction isolation level read uncommitted
if @method='duration' begin
select @xdate=isnull(@xdate,getdate())
/*run_duration is in HHMMSS format; drop SS*/
/*run_staus: 1 complete 2 retry*/
/*step_id: 0 is final job outcome*/
/*run_date: yyyymmdd format*/
/*today's performance*/
select a.name,minutes=avg((b.run_duration / 100)/100*60 + (b.run_duration / 100)%100)
into #today
from msdb..sysjobs as a
join msdb..sysjobhistory as b
on a.job_id=b.job_id
where run_status in ('1','2') and step_id=0 and run_date =convert(varchar,@xdate,112)
group by a.name
/*7 day average performance*/
/*populate #D with dates in yyyymmdd format*/
create table #D (run_date varchar(50))
declare @idate datetime set @idate=@xdate
while @idate>dateadd(day,-7,@xdate) begin
insert into #D
select run_date=convert(varchar,@idate,112)
select @idate=dateadd(day,-1,@idate)
end
/*Avg7Days*/
select a.name,minutes=avg((b.run_duration / 100)/100*60 + (b.run_duration / 100)%100)
into #avg7Days
from msdb..sysjobs as a
join msdb..sysjobhistory as b
on a.job_id=b.job_id
join #D as c
on b.run_date = c.run_date
where run_status in ('1','2') and step_id=0
group by a.name
/*output*/
select name=cast(a.name as varchar(35)),OneDayAvg=a.minutes,SevenDayAvg=b.minutes
from #today as a
join #avg7days as b
on a.name=b.name
order by a.name
return end
if @method='failures' begin
select @xdate=isnull(@xdate,getdate())
select status=case run_status when 0 then 'FAILED' when 3 then 'CANCELED' when 4 then 'EXECUTING' end
,name=cast(a.name as varchar(35)),step_name
,time=replace(convert(varchar,@xdate,107),' ','')+' '+right('0000'+cast(b.run_time/100 as varchar),4)
,b.message
from msdb..sysjobs as a
join msdb..sysjobhistory as b
on a.job_id=b.job_id
where run_status in ('0','3','4') and run_date=convert(varchar,@xdate,112)
order by run_status,a.name
return end
SQL Profiler Duration And CPU Baseline
Jan 9, 2007Sarfaraz writes "I have captured SQL Profiler data. I was reviewing top running CPU intensive SQL statements. The Duration (in seconds) 1.39, 1.09, 0.16 and CPU (in seconds) 0.97, 0.95, 0.16 respectively for some SQL statements. How do I know what is the normal baseline for duration and CPU in order to determine the CPU intensive SQL statements.
Secondly same question for long running procedure duration 0.14, 0.11. What is the normal baseline here. Is this normal or too long.
Thanks,
Sarfaraz"
Calculating Duration Time
Dec 13, 2007Hi guys, I am having difficulty calculating the time duration between receiving process to shipping process.
I have a table that consists of: Order#, Processes, Time_In, Time_Out.
Order# can be 1, 2, 3, 4, 5.
While at the same time Order# 1 can go through more than one process, i.e.: Receiving, VisualTest, MechanicalTest, ..., Shipping.
Every Order# does not necessarily goes through all processes, but surely they will go through receiving process and shipping process.
For each process we will have recorded time when the order# comes in and when it finishes with each process.
I need to calculate the length of time from Time_In from Receiving to Time_Out in Shipping.
I.E.:
Order# | Process | Time_In | Time_out
1 | Receiving | 2007-12-1 10:00:00.000 | 2007-12-1 10:10:00.000
1 | Incoming Q.A. | 2007-12-1 10:40:00.000 | 2007-12-1 11:42:00.000
1 | Visual Check | 2007-12-2 08:10:00.000 | 2007-12-2 11:00:00.000
1 | Shipping | 2007-12-2 11:20:00.000 | 2007-12-2 11:52:00.000
2 | xxxxx | xxxxx | xxxxx
2 | xxxxx | xxxxx | xxxxx
2 | xxxxx | xxxxx | xxxxx
Please help.
Thanks in advance.
Sp_primary_keys_rowset Loong Duration
Mar 19, 2008Hi!
I'm using RDA (Remote Data Access) to pull 20 tables to my Pocket PC. It took quite a long time so I ran a trace to see what happened. Everything looks fine except for when it runs:
exec [mydb]..sp_primary_keys_rowset N'Person',NULL
The duration is: 18446744073!!!
A couple of more tables has this enomous duration others have about 5000 which seems more normal.
Any clues?
/Magnus
Jesus saves. But Gretzky slaps in the rebound.
Duration Of The Ssis Package
Sep 8, 2006i want to get the execution duration of the ssis package and insert into one table,so i used a variable--"duration" and specified it's expression is getdate(). I think that only i can get the start value of the varible and the finish value,then i can know the duration.but whether i can get these two values? or better way i should try?
thanks
Profiler Duration Column Value.
Jul 12, 2007Hi Experts,
We have a VLDB ( few table with above 200 million records ). This database is used for performance testing by simulating for 150 users and executing all necessary functional flows.
When I examined the profiler results , I could see some very high values as shown below in the duration column for many events.
1521729
3462142
1624325
3211255
1248276
3903998
Does it mean that that SP or the T-Sql statement is taking this much time in milliseconds to execute and give the output ?
Any help would be greatly appreciated.
Thanks & Regards,
DBLearner
I Need Help In Calculating Time Duration
Dec 13, 2007Hi guys, I am having difficulty calculating the time duration between receiving process to shipping process.
I have a table that consists of: Order#, Processes, Time_In, Time_Out.
Order# can be 1, 2, 3, 4, 5.
While at the same time Order# 1 can go through more than one process, i.e.: Receiving, VisualTest, MechanicalTest, ..., Shipping.
Every Order# does not necessarily goes through all processes, but surely they will go through receiving process and shipping process.
For each process we will have recorded time when the order# comes in and when it finishes with each process.
I need to calculate the length of time from Time_In from Receiving to Time_Out in Shipping.
I.E.:
Order# | Process | Time_In | Time_out
1 | Receiving | 2007-12-1 10:00:00.000 | 2007-12-1 10:10:00.000
1 | Incoming Q.A. | 2007-12-1 10:40:00.000 | 2007-12-1 11:42:00.000
1 | Visual Check | 2007-12-2 08:10:00.000 | 2007-12-2 11:00:00.000
1 | Shipping | 2007-12-2 11:20:00.000 | 2007-12-2 11:52:00.000
2 | xxxxx | xxxxx | xxxxx
2 | xxxxx | xxxxx | xxxxx
2 | xxxxx | xxxxx | xxxxx
Please help.
Thanks in advance.
ExecutionLog Duration - Is It Settable?
Jan 8, 2007Please forgive the stupidity of this question - it should be something very easy and I'm just not seeing it.
I am trying to set the duration of the ExecutionLog table. Currently it is ~ 1 week, and I would like to up the lifetime of the records - say, to 1 year. I would think this is as easy as changing a .config file value, but am unable to find something for this. I found the entry for the log files, but nothing for the execution log.
In the past I have tinkered with the Execution History DTS package, which would need to be scheduled to run and pull over only the newest records - is there anything else besides this? (just let them sit in the table?)
Thanks in advance,
John
Duration In Profiler Traces
Jul 20, 2007Hi
I have a procedure in a history database that does insert into 3 tables inside a transaction. users complaint that the proc sometimes takes too long during heavy usage. I did some traces to see what is taking up the time, I found that the rpc duration was averaging > 500 ms (should only take 50ms). I checked to see if one of that statements were taking too much time, but only see the commit transaction statement taking around 500 ms). I check the avg disk queue to be around 30. ( this is on a single local disk) .
So is this definitely a disk issue, or is there something else I need to check
thanks
P
Duration Data Field Type
Mar 17, 2008Hi, I want to store a time duration such as 1:30 (mm:ss), 1:00, or 1:23 in a SQL 2005 database. What is the best data field type for this data? DateTime or TimeStamp? Thanks
View 2 Replies View RelatedDuration Of Auto Update Stats
Mar 10, 2003Does anyone know how to tell how long it took for an auto update statistics to run? I looked under DBCC Show_Statistics and it shows the time the stats were last updated, but not how long it took to update them. Thanks.
View 2 Replies View RelatedDuration Coloum In The View Job History
Sep 25, 2007Hello,
I have a critical job.
When i take the view job history of that job here it has a colum named as 'duration'. It gives the exact duration of each step it has taken in its last run.
But i have the same job in test environment.
But when i take take the history here i dont see any duration column. how can i add that column.
Thank you
ichayan
How To Capture The Duration Of Bcp Process Into A Variable
Nov 19, 1998Hi, I am interested to know how I can capture the amount of time bcp takes in a table.... the whole idea is to keep track of all bcp activities and create atable to keep bcp log time to the following table:
create table bcp_log(table_name char(20),row_count int,time_in datetime)
what I thought is to create a trigger on each table I want to log its bcp. then declare a variable and assign the duration of bcp .. But I did not know where to pull that value..... Dose anyone knows how to capture the duration of bcp for a table....
Storing Time Duration Data
Nov 15, 2006i've got an excel spreadsheet generated everyday which stores the duration of talk time as 0:02:09
When i use the Integration Services Package to move the data into a table. I've used datetime column. It comes up as 1899-12-30 00:00:02:09.000
What's best practice to store duration as in a SQL Server table? or should i convert it to seconds.
How To Convert Time Duration Format?
Jul 2, 2007Hello, everyone:
I have a customer time duration format like "12:15" that means 12 minutes and 15 seconds. I want to convert to be "12.25 " that means 12.25 minutes. Any suggestion please. Thanks a lot.
ZYT
Going Crazy With Inconsistant Batch Duration
Jul 17, 2007First; thanks for looking.
On SQL Server 2000. IBM X series, dual 2GHz Xeon processors, 3GB RAM, RAID 5 DB array and separate Mirrored drive for OS, Windows 2000 Server.
Note: I should have moved the log files to the mirrored volume - I only just noticed it wasn't like that ... oops.:o It only has the OS and backup files (different logical volumes).
Problem: I have a Bill of Material system. It has a batch (Stored Procedure) that explodes Order Line Items. Each line has about 40 components.
The SP has 5 major steps to explode the Assembly, figure out colors/sizes to get the actual part numbers, assign quantities, update flags on the line item table (that has 3,500,000 rows but is not a clustered index - fill factor 85% on the unique autonumber index I use for the updates). The SP is jam packed with User Function calls, sub-Stored Procedures, and (yes) some cursors (on small declared temp tables created for each Order Line processed).
The execution plan for the whole batch of 100 is humongous - like 1000 pages, however nearly all steps are about 16 - 40 milliseconds to execute.
It normally takes 13 seconds to process 100 line items (3900 assembly rows created). However; about every 20th run, it takes 2 or 3 minutes ON THE VERY SAME LINE ITEMS. No programming changes! Run back-to-back, or with a minute or two delay. Then running it again, back to 13 seconds. Sometimes it takes 25 or so seconds, but that oddball 3 minutes is a killer.
I put some timing INSERTs into a temporary log file to localize the problem.
So; here's the REALLY weird thing. The part that experiences the intermittent 2 minute delay is a VERY SIMPLE call to a SP that INSERTs to the tbBATCHs table and gets the identity and passes it back with an Output variable. The tbBATCHs table only has about 8 columns. Nobody else uses it so it's not locking. It has an "If Exists" selection following the Insert to see if another batch is in progress not yet flagged as complete, but's not the issue because it's never true (hard coded values for testing forces this).
I have a Standby Server (duplicate config of main server) so I ran it there. Same issue.
If I loop 100 times on the tbBATCHs INSERT SP, it is pretty quick (like 2 seconds for all 100).
It's never on the first run, so I think it may be some sort of Log File catch-up.
Also; I DO NOT have Transaction Logging in place yet.
Ideas?
Calculating Duration Of Activities Per Hour
Jul 25, 2014My data is in the following form:
CREATE TABLE Temp (ORG_NAME VARCHAR(20), START_TIME datetime, END_TIME datetime)
INSERT INTO Temp VALUES('Org Name', '2014-06-20 14:25:00.000', '2014-06-20 15:25:00.000') - AND many more like these with different START_TIME and END_TIME.
The Task:
- I need to calculate the duration of the activities PER HOUR.
i.e. in the example above, if I want to see the productivity for 2PM (i.e. activity duration from 2-3PM), I should only get 35 mins (as the activity started at 14:25). In the same way, if I see the productivity for 3PM (i.e activity duration from 3-4 PM), I should only see 25 minutes (as activity ended at 15:25).
There would technically be many activities with overlapping times - for example, there might be 5 activities starting at 14:30 and ending at 15:10. In this case, if I were to see the productivity for 2PM, I'd see 150 minutes (as each activity starts at 14:30, so 30 min per activity = 150 min). In the same way, if I saw the productivity for 3PM for those 5 activities, I'd see 50 minutes.
Average Duration To Purchase Again Same Product
Sep 6, 2015I have data concerning sale of several products, columns are two : Name_product, Purchase_day
I need to calculate with SQL the average duration (number of days) to purchase again the same product among the products
As in example, one product can be bought many times, so this product we will see it repeated several times at different days "Purchase_day" so here we can have Duration between each two successive purchases for the same product, but for the last purchase of this product the duration until today will be the day of yesterday minus the last day of purchase, and finally the average duration of this product will be the sum of all duration of this product / number of all duration of this product.
Link to the table copy and paste : [URL] .....