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Need help on Composite Query

Author

Topic

ashdesai
Starting Member

1 Post

Posted - 2011-07-01 : 03:59:28

I have a table which is as follows

Act Code R.code Start date
15239 8484 27-JUN-11
15239 8484 27-DEC-11
15239 8484 29-DEC-11

Now i need a query which extracts these 3 columns along with a 4th column which is end date.This end date is the start date of next row.

For eg 27-DEC-11 is the end date of first row in the table.

How do i do it?

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2011-07-01 : 04:12:30

Use CROSS/OUTER APPLY.

SELECT t.[Act Code], t.[R.code], t.[Start date], f.nextDate
FROM dbo.Table1 AS t
OUTER APPLY (SELECT MIN(w.[Start date]) FROM dbo.Table1 AS w WHERE w.[Act Code],= t.[Act Code] AND w.[R.code] = t.[R.code] AND w.[Start date] > t.[Start date]) AS f(nextDate)

N 56°04'39.26"
E 12°55'05.63"

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