required query

Hi

I have the table with following details.

 EMployee details
==================

s.no   empid  empname        comments             score

1           1            abc                     "hi man"              1

2           1             bbc                     "hi boy"              4

3            1             bbc                     "hi girl"              3

4             2             def                     "come here"     -2

5            2              ggf                     "go there"            4

6            2               dgf                       "go where"       -1


Here i have empid with  1 and 2  and go on... now for each and every employee

i want to get his last comment and Average of his score details and his least
score for which comment he got.


 for eg. i have to get as below for above table


s.no      empid            empname               comments             Averagescore     Least Score

3                 1                   bbc                          "hi girl"                       8/3= 2.666            1
 
6                  2                  dgf                            "go where"                +1/3= 0.333         -1

can you please guide me the query how to get it.
praveen1981Asked:
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PortletPaulfreelancerCommented:
These results:
S_NO EMPID   EMPNAME    COMMENTS      SCORE  RN      AV_SCORE      MIN_SCORE
3      1      bbc      "hi girl"      3       1      2.666666      1
6      2      dgf      "go where"     -1      1      0.333333      -2

Open in new window

Produced by this query:
SELECT
*
FROM (
       SELECT
       *
       , row_number() over (partition BY empid ORDER BY s_no DESC) AS rn
       , avg(score * 1.0)  over (partition BY empid) AS av_score
       , min(score)  over (partition BY empid) AS min_score
       FROM EMployee_Details
      ) AS Info
WHERE rn = 1
;

Open in new window

available to use at: http://sqlfiddle.com/#!3/c6cf8/7

nb: pl. replace "select *" with the columns you do need/want
and field s.no converted to s_no, please adjust for true field and table names
0

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praveen1981Author Commented:
Many thanks..
0
PortletPaulfreelancerCommented:
a pleasure.

May I ask why only "good"? Did I miss something?
0
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Microsoft SQL Server 2008

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