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Help me with this query

Author

Topic

boogi88
Starting Member

5 Posts

Posted - 2010-03-01 : 08:20:33

select count(*) as nor, sum(rating) as totalPoints, rating = CASE ((sum(rating))/(count(*)))
when round(((sum(rating))/(count(*))), 2) = 5 then 1
when round(((sum(rating))/(count(*))), 2) = 4 then 2
when round(((sum(rating))/(count(*))), 2) = 3 then 3
when round(((sum(rating))/(count(*))), 2) = 2 then 4
when round(((sum(rating))/(count(*))), 2) <= 1 then 5
ELSE 10
END as points, sum(rating)/count(*) as cond2
from tblratings where ratingType='Blog' and ratingParentID='113'

result
nor totalPoints points cond2
18 90 0 5

if u see this query cond2 gives result 5 but the condition did not return the proper value....

Help me find out y??

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2010-03-01 : 08:26:32

You have condition in CASE and also in WHEN that isn't ok.

No, you're never too old to Yak'n'Roll if you're too young to die.

boogi88
Starting Member

5 Posts

Posted - 2010-03-01 : 08:28:17

didn't get u..... could u be more specific??

boogi88
Starting Member

5 Posts

Posted - 2010-03-01 : 08:30:34

Actually thr is no condition in case.....
Please take a closer look at the query....
If i m wrong please post the correct query.....

Sachin.Nand

2937 Posts

Posted - 2010-03-01 : 08:33:14

quote:
Originally posted by boogi88

didn't get u..... could u be more specific??

Try this
select count(*) as nor, sum(rating) as totalPoints, CASE ((sum(rating))/(count(*)))
when 5 then 1
when 4 then 2
when 3 then 3
when 2 then 4
when <= 1 then 5
ELSE 10
END as points, sum(rating)/count(*) as cond2
from tblratings where ratingType='Blog' and ratingParentID='113'

PBUH

boogi88
Starting Member

5 Posts

Posted - 2010-03-01 : 08:37:42

This is wat i got......

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '<= 1 then 5
ELSE 10
END as points, sum(rating)/count(*) as cond2
from tblrati' at line 6

boogi88
Starting Member

5 Posts

Posted - 2010-03-01 : 08:48:15

Thanks.... it worked Gr8....
Here is my finished query.......

select count(ratingID) as nor, sum(rating) as totalPoints, round((sum(rating))/(CASE round(((sum(rating))/(count(ratingID))))
when 5 then 1
when 4 then 2
when 3 then 3
when 2 then 4
when 1 then 5
END)) as points, sum(rating)/count(ratingID) as cond2
from tblratings where ratingType='Blog' and ratingParentID='113'

Sachin.Nand

2937 Posts

Posted - 2010-03-01 : 08:53:17

No but u have missed the <= part.You can modify ur query this way
select count(*) as nor, sum(reading) as totalPoints,
CASE when AVG(Reading)=5 then 1
.
.
.
CASE when <= 1 then 5
ELSE 10
END as points, sum(rating)/count(*) as cond2
from tblratings where ratingType='Blog' and ratingParentID='113'

And I beleive u need average so u can directly use avg function instead of doing (sum(rating))/(count(*))the way I did.

PBUH

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