Date Count in Sql basec on user id

Question

4.33/5 (3 votes)

See more:

date            userid
2012-12-30          21
2012-12-30          21
2012-12-31          21
2012-12-30          22

I would like the result to look like

userid          totaldays
21                 2
22                 1

There are two same date because on same date they will have two entry ie AM and PM

I'm trying like this:

SQL

SELECT
CONVERT(date,TOF.compoffdate,101),
count(compoffdate) as TotalDays
FROM tblcompoff TOF
WHERE TOF.userid=21
group by tof.compoffdate

How to proceed?

Posted 4-Jan-13 1:47am

tpkpradeep

Updated 4-Jan-13 2:46am

André Kraak

v3

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André Kraak · Answer 1 · 2013-01-04T03:06:00

First you need to make sure you have a dataset on which you want to count the rows.
In your case you only want to count the unique days for an userid, so the first SQL query to achieve this would be

SQL

SELECT DISTINCT CONVERT( date, compoffdate, 101 ) AS date, userid
FROM tblcompoff

This query results in the following rows:

date            userid
2012-12-30          21
2012-12-31          21
2012-12-30          22

Now based on this data set we can count the number off days for each user id by using the following query:

SQL

SELECT TOF.userid, COUNT( TOF.date ) AS totaldays
FROM (SELECT DISTINCT CONVERT( date, compoffdate, 101 ) AS date, userid
      FROM tblcompoff)
GROUP BY TOF.userid

The query performs the count over the first query we made to limit/specify our data.
The result is:

userid          totaldays
21                 2
22                 1

I hope this make the process off how to achieve your result clear.

kankeyan · Answer 2 · 2013-01-04T02:16:00

Solution 2

SQL

select count(compoffdate),userid from tblcompoff  group by userid

Simple one i think its useful

Posted 4-Jan-13 2:16am

kankeyan

Comments

Arun kumar Gauttam 4-Jan-13 8:22am

i thing you not see the result of your query,
is,
userid totaldays
21 3
22 1

so your solution is wrong

kankeyan 4-Jan-13 8:31am

I worked on this query it will work fine.

Tharaka MTR · Answer 3 · 2013-01-04T02:53:00

Solution 3

Use this

SQL

SELECT userid , COUNT(DISTINCT DATEADD(dd, 0, DATEDIFF(dd, 0, compoffdate))) AS totaldays FROM tblcompoff
GROUP BY userid

Posted 4-Jan-13 2:53am

Tharaka MTR

Updated 4-Jan-13 4:28am

v2

Comments

Tharaka MTR 4-Jan-13 10:27am

Just check this and see. this works definitely

Herman<T>.Instance · Answer 4 · 2013-01-04T03:06:00

Solution 4

SQL

select cap.userID, Count(cap.Date) as date
from
(
    SELECT ROW_NUMBER() over (partition by convert(varchar, table.Date, 108), useriD Order by userID, convert(varchar, table.Date, 108)) as rownum, userID, convert(varchar, table.Date, 108) from table 
) as cap
where cap.RowNum=1
group by cap.userID

Posted 4-Jan-13 3:06am

Herman<T>.Instance

Updated 4-Jan-13 3:07am

v2

Reza Alipour Fard · Answer 5 · 2013-01-04T04:12:00

Solution 6

Hi
You can use from bellow query(it's short way):

Select	UserID, Count(*)
From	(Select	UserID, Date
		From	[YourTableName]
		Group By	UserID, Date) As Temp
	Group by UserID

I hope it's helpful.

Posted 4-Jan-13 4:12am

Reza Alipour Fard