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Updating Views
34 posts, Page 2 of 4
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paul s-306273
paul s-306273
Posted Thursday, February 07, 2013 1:28 AM
Ten Centuries
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Last Login: Friday, May 17, 2013 4:24 AM
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Steve - 0 points to you for creating a view using 'select *'...
Post #1416861
Hugo Kornelis
Hugo Kornelis
Posted Thursday, February 07, 2013 1:42 AM
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Good question, Steve!
Here is a link to the most recent version of the relevant Books Online article:
http://msdn.microsoft.com/en-us/library/ms187821.aspx
. It's the same aas the one in the explantion, but without the explicit version number added. (Why do people so often use links to older versions when the question is not about that older version? Why????)
The true danger of using SELECT * in a view becomes apparent if, after adding that new column, the original column is then dropped. The view will still return data, still use the name of the old (no longer existing) column, but return data from the new column.
Hugo Kornelis, SQL Server MVP
Visit my SQL Server blog:
http://sqlblog.com/blogs/hugo_kornelis
Post #1416876
Stuart Davies
Stuart Davies
Posted Thursday, February 07, 2013 2:02 AM
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paul s-306273 (2/7/2013)
Steve - 0 points to you for creating a view using 'select *'...
+1 - Apart from that - good question
-------------------------------
Posting Data Etiquette - Jeff Moden
Smart way to ask a question
There are naive questions, tedious questions, ill-phrased questions, questions put after inadequate self-criticism. But every question is a cry to understand (the world). There is no such thing as a dumb question. ― Carl Sagan
I would never join a club that would allow me as a member - Groucho Marx
Post #1416888
Raghavendra Mudugal
Raghavendra Mudugal
Posted Thursday, February 07, 2013 2:04 AM
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Awesome QtoD, thank you Steve.
(was thinking if the 4th option will come true in future versions, would be cool, and then thought again.. setting auto to everything is not a acceptable way to go, but it would be a nice feature and a lot to consider before really using it
Using "schemabinding" and "select *" ... I do not feel comfortable using it.. i create VIEW with the specifying column names, and if needed, then alter the view to suit the new needs and modify the code to the new adjustments. Earlier i had views with select * in one of the web projects and then later I changed them to the column specifics.. and by doing that whenever it is needed I kind of gained control over the objects by knowing which object needs modification and which doesn't and i was knowing each and every VIEW object which are the tables it refers.)
ww; Raghu
--
There are only 10 types of people in the world, those who understand binary, and those who don't.
Note: (as of now) only.. 1 and 4 applies (i am on my way...)
Post #1416892
Hugo Kornelis
Hugo Kornelis
Posted Thursday, February 07, 2013 2:14 AM
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paul s-306273 (2/7/2013)
Steve - 0 points to you for creating a view using 'select *'...
So how should Steve have made a QotD about the dangers of select * in a view without using select * ???
Hugo Kornelis, SQL Server MVP
Visit my SQL Server blog:
http://sqlblog.com/blogs/hugo_kornelis
Post #1416897
alex.d.garland
alex.d.garland
Posted Thursday, February 07, 2013 3:14 AM
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Hugo Kornelis (2/7/2013)
paul s-306273 (2/7/2013)
Steve - 0 points to you for creating a view using 'select *'...
So how should Steve have made a QotD about the dangers of select * in a view without using select * ???
+1 - but I note that if a warning about using "SELECT *..." had been added to the explanation, this would have been even more helpful.
Post #1416919
Raghavendra Mudugal
Raghavendra Mudugal
Posted Thursday, February 07, 2013 3:17 AM
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alex.d.garland (2/7/2013)
Hugo Kornelis (2/7/2013)
paul s-306273 (2/7/2013)
Steve - 0 points to you for creating a view using 'select *'...
So how should Steve have made a QotD about the dangers of select * in a view without using select * ???
+1 - but I note that if a warning about using "SELECT *..." had been added to the explanation, this would have been even more helpful.
... it is like... "never say never...."
ww; Raghu
--
There are only 10 types of people in the world, those who understand binary, and those who don't.
Note: (as of now) only.. 1 and 4 applies (i am on my way...)
Post #1416921
Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
Posted Thursday, February 07, 2013 4:28 AM
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Good question, Steve, thanks
____________________________________________
Space, the final frontier? not any more...
All limits henceforth are self-imposed.
“libera tute vulgaris ex”
Post #1416955
(Bob Brown)
(Bob Brown)
Posted Thursday, February 07, 2013 5:56 AM
Say Hey Kid
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Last Login: Friday, April 19, 2013 10:27 AM
Points: 690,
Visits: 1,100
Good question. Thanks.
Post #1417017
mtassin
mtassin
Posted Thursday, February 07, 2013 7:02 AM
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Good question, I learned something.
Generally I don't ever write views with SELECT * in them.
but even if I did... If I had to refresh the view, I'd typically just alter the view and leave the code as is... that works too, or did... I haven't written a view with SELECT * in it since before SQL 2005
--Mark Tassin
MCITP - SQL Server DBA
Proud member of the Anti-RBAR alliance.
For help with Performance click this link
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Post #1417051
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