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maxsubrat
Active User
Joined: 27 Feb 2008
Posts: 110
Location: india
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This is regarding to fetch the count thru a db2 query.
Table name : EMP_SCHOOL
lot of columns are there in the table.
I want to get the maximum number of admission in a day.
for ex: i have a field like EMP_ID, ADMISSION_DATE..
If a person gets admission, then he/she get the EMP_ID on that day.
So i want to retrieve the maximum number of count people have taken the admission on a perticular day..
or which date the maximum no. of people taken the admission and how many...
Thanks |
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anandinmainframe
Active User
Joined: 31 May 2007
Posts: 171
Location: India
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Hello,
Select count(*) from EMP_SCHOOL
where ADMISSION_DATE = "02/23/201" |
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Srihari Gonugunta
Active User
Joined: 14 Sep 2007
Posts: 295
Location: Singapore
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Subrat,
You can try the following queries.
| Code: |
SELECT A.ADMISSION_DATE, A.CNT
FROM
(SELECT ADMISSION_DATE,COUNT(*) AS CNT FROM EMP_SCHOOL
GROUP BY ADMISSION_DATE) A
WHERE A.CNT = (SELECT MAX(B.CNT) FROM
(SELECT ADMISSION_DATE,COUNT(*) AS CNT FROM EMP_SCHOOL
GROUP BY ADMISSION_DATE) B); |
| Code: |
WITH EMPCTE(ADMISSION_DATE,CNT) AS
(SELECT ADMISSION_DATE,COUNT(*) AS CNT FROM EMP_SCHOOL
GROUP BY ADMISSION_DATE)
SELECT ADMISSION_DATE,CNT FROM EMPCTE WHERE
CNT = (SELECT MAX(CNT) FROM EMPCTE); |
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Srihari Gonugunta
Active User
Joined: 14 Sep 2007
Posts: 295
Location: Singapore
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Subrat,
You can also try the following.
| Code: |
SELECT ADMISSION_DATE,COUNT(*) AS CNT FROM EMP_SCHOOL
GROUP BY ADMISSION_DATE
ORDER BY 2 DESC
FETCH FIRST 1 ROWS ONLY; |
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