I want to merge date and amount into a string - sql-server-2008

Question

I am using the query which merges date column and amount column into a string, but as we are querying it by policy number, it is getting many rows, my thing is to merge these different values of the columns to one.
example:
2014/09/01 733.00
2012/08/01 322.02
so these are the different rows for one policy number, now I want them to be also in one single string as :
2014/09/01 733.00 2012/08/01 322.02
If they are two rows, then also the value of my column should merge all the values of dates and amounts into single string for that particular policy number.
The query I am using is :
SELECT
LEFT(CONVERT(VARCHAR, BSD.BILL_SCH_DTL_BILL_DT, 111), 10)
+ ' '+ CONVERT (VARCHAR(50),BSD.BILL_SCH_DTL_DRV_AMT ,128)Schedule_pymts, *
From POLICY_PERIOD_BILLING_SCHEDULE PB
JOIN BILLING_SCHEDULE_DETAIL BSD
ON BSD.PLCY_PRD_BILL_SCH_ID = PB.PLCY_PRD_BILL_SCH_ID
AND BSD.BILL_SCH_DTL_DRV_AMT <> 0
AND BSD.VOID_IND = 'n'
but this only merges one month and one amount together, but I need all the months of amount to be in one string(column) for that particular policy number.

Answer 1

You need to use FOR XML PATH to concatenate your rows to columns. I think something like this will work:
SELECT PB.*,
RTRIM((SELECT CONVERT(VARCHAR(10), BSD.BILL_SCH_DTL_BILL_DT, 111)+ ' '
+ CONVERT(VARCHAR(50), BSD.BILL_SCH_DTL_DRV_AMT, 128) + ' '
FROM BILLING_SCHEDULE_DETAIL AS BSD
WHERE BSD.PLCY_PRD_BILL_SCH_ID = PB.PLCY_PRD_BILL_SCH_ID
AND BSD.BILL_SCH_DTL_DRV_AMT <> 0
AND BSD.VOID_IND = 'n'
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')) AS Schedule_pymts
FROM POLICY_PERIOD_BILLING_SCHEDULE AS PB;
N.B. Don't use SELECT * - explicitly list your columns, but I don't know what they are so can't above