problem creating a sql query

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1.00/5 (2 votes)

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Hi all!!

I have a datatable which has this data

EMPID      || DateOFJoining   || Designation             || Section     ||  EmpName


   1       ||    25 Oct 2007  ||Private Secretary, Gr II||   Establishment || Ajay
   2       ||    02 Aug 2006  || Section Officer        ||   Establishment ||Raj
   1       ||    02 Aug 2006  || Private Secretary, Gr I||   Accounts      ||Ajay
   3       ||   13 Oct 2010   || Reviewing Officer      ||   Establishment || Kiran
   1       ||   01 Jan 2002   || Accountant             ||   Accounts      || Ajay

now what i need is the lowest DateOfJoining for each employee so it should look like this

EMPID      || DateOFJoining   || Designation             || Section     ||  EmpName


  
   2       ||    02 Aug 2006  || Section Officer        ||   Establishment ||Raj
   3       ||   13 Oct 2010   || Reviewing Officer      ||   Establishment || Kiran
   1       ||   01 Jan 2002   || Accountant             ||   Accounts      || Ajay

please tell me how can i do this !!!

Posted 20-Jun-12 22:51pm

ujjwal uniyal

Updated 20-Jun-12 23:36pm

v3

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Comments

preet88 21-Jun-12 5:01am

use ORDER BY in your query
like select * from tablename ORDERBY attributename

ujjwal uniyal 21-Jun-12 5:05am

i don't have to sort data instead i have to filter data for each epmloyee where doteofjoining is lowest

ssd_coolguy 21-Jun-12 5:10am

hey what do you mean "each epmloyee where doteofjoining is lowest"?
is there multiple records for employee...?
can you explain more...

ujjwal uniyal 21-Jun-12 5:12am

yeah there are multiple records for each employee. Like in the table above there are 3 records for employee with eid=1. similarly there may or may not be multiple records for employees.

2 solutions

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ssd_coolguy · Answer 1 · 2012-06-20T23:19:00

Solution 1

try below query:

SQL

SELECT a.*
FROM employee A,
(SELECT EMPID ,MIN(DateOFJoining) DateOFJoining FROM employee
GROUP BY EMPID) B
WHERE b.EMPID=a.EMPID
AND b.DateOFJoining=a.DateOFJoining

Posted 20-Jun-12 23:19pm

ssd_coolguy

Comments

Prosan 21-Jun-12 5:26am

good query

Vani Kulkarni 21-Jun-12 5:38am

Good One

ssd_coolguy 21-Jun-12 6:30am

thank you... :)

Prosan · Answer 2 · 2012-06-20T23:21:00

Solution 2

by this query u can get lowest date of joing of each employee but with name and doj.

SQL

select distinct EmpName, MIN(doj) from TblEmp group by EmpName

Posted 20-Jun-12 23:21pm

Prosan

Comments

Vani Kulkarni 21-Jun-12 5:39am

Good Query!