Created
November 22, 2018 08:48
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Coalesces error messages from SQL Error Log into one row per exception
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DECLARE @MinutesBackToCheck INT = 10; | |
SET NOCOUNT ON; | |
DECLARE @start DATETIME; | |
SET @start=DATEADD(MINUTE,-@MinutesBackToCheck,GETDATE()); | |
DECLARE @errors AS TABLE | |
( | |
ID INT IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED, | |
LogDate DATETIME, | |
ProcessInfo NVARCHAR (10), | |
Error NVARCHAR(MAX) | |
); | |
INSERT INTO @errors(LogDate,ProcessInfo,Error) | |
EXEC master..xp_readerrorlog 0, 1, NULL, NULL, @start, NULL, 'Desc'; | |
--DECLARE @Alerts AS TABLE | |
--( | |
-- LogDate DATETIME, | |
-- ProcessInfo NVARCHAR (10), | |
-- Error NVARCHAR(MAX) | |
--) | |
;WITH logs | |
AS | |
( | |
SELECT | |
head.ID AS RootID | |
,head.ID | |
,head.LogDate | |
,head.ProcessInfo | |
,CONVERT(nvarchar(max), head.Error) AS Error | |
, 1 AS Lvl | |
FROM @errors as head | |
WHERE | |
head.Error LIKE N'Error:%Severity: %' | |
UNION ALL | |
SELECT | |
head.RootID | |
,tail.ID | |
,tail.LogDate | |
,tail.ProcessInfo | |
,CONVERT(nvarchar(max), head.Error + CHAR(13) + CHAR(10) + tail.Error) | |
,head.Lvl + 1 | |
FROM logs as head | |
INNER JOIN @errors as tail | |
ON head.ProcessInfo = tail.ProcessInfo | |
AND head.LogDate = tail.LogDate | |
AND head.Error <> tail.Error | |
AND head.ID > tail.ID | |
) | |
--INSERT INTO @Alerts | |
SELECT | |
LogDate, | |
ProcessInfo, | |
Error | |
FROM | |
( | |
SELECT *, | |
RowRank = ROW_NUMBER() OVER (PARTITION BY RootID ORDER BY Lvl DESC) | |
FROM logs | |
) AS d | |
WHERE RowRank = 1 | |
OPTION (MAXRECURSION 0); |
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