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Truncate Table


Truncate Table

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Comments posted to this topic are about the item Truncate Table
John Mitchell-245523
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Can we have more questions where the answer is in the title of the question!

John
Tony Davis
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It would certainly help my average!

Seriously though, apologies for the mistakes made in today's and yesteday's QoDs.


Tony.

Bob Fazio
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I thought it had to be some sort of trick question. (Halloween and all). Smile
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Surely drop table is quicker?



Nicholas Cain
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I do not believe that the answer is correct.

The question was the fastest way to delete every row in a table.
Delete and truncate are not the same thing.

Should the question have read "to remove all rows from a table" then I would agree with the truncate statement.
This does not take into account things like identity values which would continue from the most recent number rather than completely reseed post truncate.



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John Mitchell-245523
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Nicholas Cain (10/30/2007)
I do not believe that the answer is correct.

The question was the fastest way to delete every row in a table.
Delete and truncate are not the same thing.

Should the question have read "to remove all rows from a table" then I would agree with the truncate statement.
This does not take into account things like identity values which would continue from the most recent number rather than completely reseed post truncate.


The question doesn't take that into account, therefore nor should your answer. DELETE and TRUNCATE do indeed work differently, but both have the effect of deleting all rows. I can't see the difference between "delete every row in a table" and "remove all rows from a table".

John

Edit: actually, having looked at the choices again, neither of the DELETE options has correct syntax anyway.
Paul Randal
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Hmm - dropping the table is the fastest way as it logs the least and doesn't take any locks, compared to truncate table. I think that was a bad question as the answer they wanted was truncate - drop shouldn't have been an option.

Paul Randal
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gr8 question with the answer in the title itself :-P

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