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REPLICATE - 1


REPLICATE - 1

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Dana Medley
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vinu512 (5/1/2013)
Good Question Ron....and thanks for the explanation Hugo.


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vinu512 (5/1/2013)
Good Question Ron....and thanks for the explanation Hugo.


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Revenant
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Interesting, very interesting... Thanks, Ron!
Miles Neale
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+1 Thanks for your contribution to man of us learning something in this question.

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vinu512 (5/1/2013)
Good Question Ron....and thanks for the explanation Hugo.

+1 :-):-P

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Bangla
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Nice question....
Carlo Romagnano
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crussell-931424 (5/1/2013)
Hugo Kornelis (5/1/2013)
Raghavendra Mudugal (5/1/2013)
sorry; I have hard time in understanding/realizing the missing piece here.

- Replicate is replicating as needed (the expression is 5 chars and and @S is also 5 so no changes in the @S in the SET level0
- as the @S is set V5, so the datalength is 5 of the S as-well in the table

can any one shed some light please?


I think Ron expected the ANSI_WARNINGS setting to cause errors. Either because of the implicit conversion of 12.5 to integer, or because of the string truncation.
However ...

1. Rounding numerical data is not an overflow condition; AFAIK this does not raise an error regardless of ANSI_WARNINGS setting;
2. String truncation does cause an error to occur with ANSI_WARNINGS on - but only if it occurs while inserting or updating, not when assigning to a variable. This is mentioned explicitly in the Books Online article (http://msdn.microsoft.com/en-us/library/ms190368.aspx).

If you increase the length of @S to 11 characters or more, the effect of ANSI_WARNINGS does kick in. An error is returned during the INSERT statement, and the final SELECT returns nothing at all. (Since the INSERT errored, no row was inserted, so there is nothing to return).


Thanks Hugo, that makes sense. I was having a hard time understanding why someone would think there was a problem here.

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emanuel ionescu (5/1/2013)
Very well put, Hugo!


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Ken Wymore
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Interesting question and nice insight from Hugo. Thanks to all!
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