SQL help - Case Statement

mc
Level 2
SQL help - Case Statement

Greetings all, there is a syntax error in the below, is there some one who can correct? 

I am expecting a result set with columns acct, name, country, splind1, splindnot1, splind_all.

Much appreciated!

SELECT `acct`, `name`,`country`,
case
when `splind = '1'
then
sum((`transactions`)/`MV`)*100 as "splind1"
when `splind` != '1'
then
sum((`transactions`)/`MV`)*100 as "splindnot1"
else
sum((`transactions`)/`MV`)*100 as "splind_all"
FROM `twoyears`
group by
 `acct`, `name`,`country`

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4 Replies
Turribeach

You can’t return 3 values with a single CASE statement. Each case statement returns one value hence you must have a single alias and you are missing the end. Something like this should work:

 

SELECT `acct`, `name`,`country`,
case
when `splind = '1'
then
sum((`transactions`)/`MV`)*100
when `splind` != '1'
then
sum((`transactions`)/`MV`)*100
else
sum((`transactions`)/`MV`)*100

End as "splind_all"
FROM `twoyears`
group by
 `acct`, `name`,`country`

mc
Level 2
Author

Thanks for ur response. Actually I need to identify the 3  columns separately based on the 3 conditions and ideally in one record as adjacent columns.  Probably Case-When is not the syntax I should use. Any suggestions is appreciated . 

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Well you can have 3 case statements and 3 columns but your case statement logic is not correct because you are doing the same math on all 3 cases so I am not really sure what you are trying to achieve.

SELECT `acct`, `name`,`country`,
case when `splind = '1' then sum((`transactions`)/`MV`)*100 end as "splind1",
case when `splind` != '1' then sum((`transactions`)/`MV`)*100 end as "splindnot1",
case when `splind` IS NULL then sum((`transactions`)/`MV`)*100 end as "splind_all"
FROM `twoyears`
group by
 `acct`, `name`,`country`

 

mc
Level 2
Author

Thanks a bunch Turribeach, My head got jumbled up - I solved my case with left joins. Actually I am starting SQL again after a gap. Thanks so much for ur answers in this forum. My case was that I had to preserve all the records and see the behavior of splind on each record. Thanks again

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