How do I get records before and after given one?

Question

I have the following table structure:

Id, Message
1, John Doe
2, Jane Smith
3, Error
4, Jane Smith

Is there a way to get the error record and the surrounding records? i.e. find all Errors and the record before and after them.

Answer 1

;WITH numberedlogtable AS
(
SELECT Id,Message, 
ROW_NUMBER() OVER (ORDER BY ID) AS RN
 FROM logtable
)

SELECT Id,Message
FROM numberedlogtable
WHERE RN IN (SELECT RN+i
             FROM numberedlogtable
             CROSS JOIN (SELECT -1 AS i UNION ALL SELECT 0 UNION ALL SELECT 1) n
             WHERE Message='Error')