Convert sqlserver data to Pivot table [closed] - asp.net

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Closed 10 years ago.
ID ---- ACCOUNT ---- SECTOR ---- AMOUNT_CURRENCY1 ------ AMOUNT_CURRENCY2
1 --- account1 ---- sector1 --- 100 ------ 200
2 --- account1 ---- sector2 --- 150 ------ 250
3 --- account2 ---- sector1 --- 250 ------ 300
4 --- account2 ---- sector2 --- 90 ------ 180
I need data to be like this
sector1 ------------ sector2
| amount1 | amount2 | amount1 | amount2
Account1 | 100 | 200
Account2 | 250 | 250
I need to put the result in asp.net gridview to edit
I'm using the following script:
1- to get columns:
DECLARE #ColumnHeaders VARCHAR(MAX)
SELECT #ColumnHeaders =
COALESCE(
#ColumnHeaders + ',[!sector:' + cast(sector_ID as nvarchar)+ ':' + sector_name + ']',
'[!sector:' + cast(sector_ID as nvarchar)+ ':' + sector_name+ ']'
)
FROM vw_Transaction
group by sector_ID, sector_name
2- pivot:
DECLARE #TableSQL NVARCHAR(MAX)
SET #TableSQL = N'
SELECT *
FROM (SELECT trans_id, account_name, sector_id, sector_name,
amount_currency1, amount_currency2, ''!sector:'' + cast(sector_ID as nvarchar)+ '':'' + sector_name as col
FROM dbo.vw_Transaction
WHERE
trans_id=' + CAST(#trans_id as varchar) +'
) AS PivotData
PIVOT (
MAX(amount_currency1)
FOR col IN (
' + #ColumnHeaders + '
)
) AS PivotTable'
EXECUTE(#TableSQL)
the problem, i have 2 fields that need to pivot, amount_currency1 and amount_currency2

Answer 1

Since you are trying to PIVOT on two values, you must first UNPIVOT the AMOUNT_CURRENCY1 and AMOUNT_CURRENCY2 columns:
You will want to add something like this to your query:
select account, value, sector+ '_'+col as col
from
(
select sector,
account,
AMOUNT_CURRENCY1,
AMOUNT_CURRENCY2
from vw_Transaction
) src
unpivot
(
value
for col in (AMOUNT_CURRENCY1, AMOUNT_CURRENCY2)
) unpiv
Then your final query will be similar to this:
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
select #cols = STUFF((SELECT DISTINCT ','
+ quotename(t.sec+'_'+c.name)
from
(
select sector sec
from vw_Transaction
) t
cross apply sys.columns as C
where C.object_id = object_id('vw_Transaction') and
C.name not in ('id', 'account', 'sector')
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT account,' + #cols + ' from
(
select account, value,
sector+ ''_''+col as col
from
(
select sector,
account,
AMOUNT_CURRENCY1,
AMOUNT_CURRENCY2
from vw_Transaction
) src
unpivot
(
value
for col in (AMOUNT_CURRENCY1, AMOUNT_CURRENCY2)
) unpiv
) x
pivot
(
max(value)
for col in (' + #cols + ')
) p '
execute(#query)
See SQL Fiddle with Demo
Result:
| ACCOUNT | SECTOR1_AMOUNT_CURRENCY1 | SECTOR1_AMOUNT_CURRENCY2 | SECTOR2_AMOUNT_CURRENCY1 | SECTOR2_AMOUNT_CURRENCY2 |
------------------------------------------------------------------------------------------------------------------------
| account1 | 100 | 200 | 150 | 250 |
| account2 | 250 | 300 | 90 | 180 |