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T-SQL Output Clause


T-SQL Output Clause

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core-909671
core-909671
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The temporary table does not contain a column "CategoryName". It attempts to update a column that does not exist. It would throw an error, not return rows.
john.curran.z3g
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IF you have Northwind installed, the statement will update a Northwind Categories table and use the values from the inserted/deleted OUTPUT option to insert into the temp table.
Lynn Pettis
Lynn Pettis
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Rich Holt (1/6/2010)
Exclamation I should also caution you about the other way to look at this:

If you insert/update/delete TABLE variable rows inside a transaction, and subsequently rollback the work, the table variable changes are not rolled back with the transaction. This could lead to data inconsistencies.
Be careful.


I agree, be careful; however, there may be a reason that you want the output from the insert/update/delete regardless of the success/failure of the transactions. If this is the case, then using table variables is required.

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Lynn Pettis

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mjohnson-909671 (1/6/2010)
The temporary table does not contain a column "CategoryName". It attempts to update a column that does not exist. It would throw an error, not return rows.


Take a closer look at the code. CategoryName is being updated in the Categories table. The OUTPUT clause is inserting the Old and New Category names into a temporary table as an audit of changes.

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Lynn Pettis

For better assistance in answering your questions, click here
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core-909671
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Ah. Ok. I don't have Northwind installed anywhere.
Lynn Pettis
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Neither do I.

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Lynn Pettis

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dmbaker
dmbaker
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Where was the choice for "Could not locate entry in sysdatabases for database 'Northwind'."?



Lynn Pettis
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dmbaker (1/6/2010)
Where was the choice for "Could not locate entry in sysdatabases for database 'Northwind'."?


Actually irrelevant to answering the question.

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Lynn Pettis

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dmbaker
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I know, I got the question right. Just being snarky. :-P



core-909671
core-909671
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Gee.thanks. First time I ever post... thanks a ton. You're the best!
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