PIVOT on multiple columns SQL server (Aspen Relay Database) - sql

Question

I'm using a vendor supplied Relay Database (Aspen), which is running on MS SQL server). I'm attempting to write a pivot query that needs to pivot on 2 columns.
I created a temp table since the data is across multiple tables.
WITH TEMP_TABLE AS (
SELECT
R.LOCATIONID LLOCATIONID, R.ID RID, s.groupname SGROUPNAME,t.settingname TSETTINGNAME, s.setting SSETTING
from tsetting1 s
inner join tsettype1 t on t.relaytype=s.relaytype and t.groupname = s.groupname and t.rownumber = s.rownumber
INNER JOIN TREQUEST Q ON S.REQUESTID = Q.ID
INNER JOIN TRELAY R ON R.ID = Q.RELAYID
INNER JOIN TLOCATION L ON L.ID = R.LOCATIONID
where s.requestid=29117
)
select * from TEMP_TABLE
That select all from Temp returns 38 rows of data, a subset is shown here:
RID -----SGROUPNAME------TSETTINGNAME-------SSETTING
31297 LOAD1 ENABLE TRUE
31297 LOAD1 ANGLE 60
31297 LOAD2 CALCULATED_LOAD 12269
ETC....
I added this pivot, which gets me close:
PIVOT (MAX(SSETTING) FOR TSETTINGNAME IN (ENABLE, REACH, ANGLE, CALCULATED_LOADABILITY, ZLE, CTR, PTR, KVNOM, PICKUP, PERCENTAGE)) P
Returned result from Pivot:
RID-----SGROUPNAME-----ENABLE----REACH----ANGLE----CALCULATED_LOADABILITY
31297 LOAD1 TRUE 15 60 9444
31297 LOAD2 TRUE 10 30 12269
31297 LOAD3 TRUE 20 60 14167
ETC...
I would like to have the data as 1 record for RID 31297, where LOAD1-ENABLE, LOAD2-ENABLE, LOAD3-ENABLE, LOAD1-REACH, ETC. are all headers.
I've tried multiple pivots and cross apply, but I can't seem to get the data to display correctly.
Let me know if anything is unclear or if you need more information. Any help will be greatly appreciated.
Thanks,
Joe C.

Answer 1

It may be easier with a bunch of case statements and a group by RID. By the way this is the "original" method of pivoting before PIVOT was implemented.
select RID
, Load1_Enable = MAX(case when SGROUPNAME = 'Load1' then enable else null end)
, Load2_Enable = MAX(case when SGROUPNAME = 'Load2' then enable else null end)
from [YourTable]
group by RID
I would go all the way to the first cte though:
WITH TEMP_TABLE AS (
SELECT
R.LOCATIONID LLOCATIONID, R.ID RID, s.groupname SGROUPNAME,t.settingname TSETTINGNAME, s.setting SSETTING
from tsetting1 s
inner join tsettype1 t on t.relaytype=s.relaytype and t.groupname = s.groupname and t.rownumber = s.rownumber
INNER JOIN TREQUEST Q ON S.REQUESTID = Q.ID
INNER JOIN TRELAY R ON R.ID = Q.RELAYID
INNER JOIN TLOCATION L ON L.ID = R.LOCATIONID
where s.requestid=29117
)
select RID
,Load1_Enable = MAX(case when SGROUPNAME = 'Load1' and TSETTINGNAME = 'Enable' then SSETTING else null end)
from TEMP_TABLE
group by RID
Note MAX is only there for an aggregate -- you should be aggregating only one record.