why group by doesn't wrok!

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SQL

SELECT STUDENTID, COURSEID, COURSENAME, COURSEGROUP
FROM SOME_VIEW
WHERE STUDENTID=:STU_ID
--GROUP BY STUDENTID, COURSEID, COURSENAME
ORDER BY STUDENTID

I want the previous code to work like the following
if we have 2 data Rows

STUDENTID COURSEID COURSENAME COURSEGROUP
15 PHY144

Posted 19-Mar-12 22:35pm

kareem salem

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Bernhard Hiller 20-Mar-12 9:23am

What do you want?:
- The parameter :STU_ID may contain more than one ID value
- Get column names included in the output
- something else?

kareem salem 21-Mar-12 4:34am

sorry this is incomplete question I think It submitted while writing
It's Compelled here
http://www.codeproject.com/Questions/350775/How-group-by-works

2 solutions

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krumia · Answer 1 · 2012-03-20T02:50:00

Solution 2

Your question is not exactly clear. I think what you need to do is,

SQL

SELECT DISTINCT STUDENTID, COURSEID, COURSENAME, COURSEGROUP
FROM   SOME_VIEW
WHERE  STUDENTID = :STID

Posted 20-Mar-12 2:50am

krumia

Hrushikesh_phapale · Answer 2 · 2012-03-19T22:58:00

Solution 1

hi,
try this,

SELECT STUDENTID, COURSEID, COURSENAME, COURSEGROUP
FROM SOME_VIEW
GROUP BY STUDENTID, COURSEID, COURSENAME
HAVING STUDENTID=STU_ID

Posted 19-Mar-12 22:58pm

Hrushikesh_phapale