How can I implement error handling within a SQL script that us

Hi Hugo,
I was thinking in similar lines as the solution you gave (not the one
with severity 20.. I would have never come up with such a solution :)
But I think there is a problem in the other one. We are talking about
different batches. and these batches will be creating database objects.
Can you give an example on how will you implement the error handling with
temp tables for this scenario?
1. Create a view on some existing table first (select *)
2. If the view creation is successful,then create another view on this view.On Thu, 1 Jun 2006 22:35:01 -0700, Omnibuzz wrote:
(snip)
>Can you give an example on how will you implement the error handling with
>temp tables for this scenario?
>1. Create a view on some existing table first (select *)
>2. If the view creation is successful,then create another view on this view.[/color
]
Hi Omnibuzz,
There's one thing I hadn't thought about - CREATE VIEW must be the only
in a batch, so you'll have to use dynamic SQL to make it conditional.
-- Preparational steps
CREATE TABLE #Status (Status varchar(30) NOT NULL)
INSERT INTO #Status (Status) VALUES ('Okay')
go
-- Start of batch #1
EXEC ('CREATE VIEW v1
AS
SELECT 1 AS a')
IF @.@.error > 0
BEGIN
UPDATE #Status
SET Status = 'Error in batch #1'
END
go
-- Start of batch #2
IF (SELECT Status FROM #Status) = 'Okay'
BEGIN
EXEC ('CREATE VIEW v2
AS
SELECT a
FROM v1')
IF @.@.error > 0
BEGIN
UPDATE #Status
SET Status = 'Error in batch #2'
END
END
go
-- Repeat for batches #3, #4, ...
-- After last batch:
IF (SELECT Status FROM #Status) <> 'Okay'
BEGIN
PRINT 'Error'
SELECT Status FROM #Status
END
DROP TABLE #Status
go
Hugo Kornelis, SQL Server MVP