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Data Type and Length


Data Type and Length

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Ameya- Ameyask
Ameya- Ameyask
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Very good question indeed. Takes back to basics :-)
Dennissinned
Dennissinned
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Great Question. Thank you.
Kari Suresh
Kari Suresh
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Good question. Thank you.



KSB
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Thousands of candles can be lit from a single candle, and the life of the candle will not be shortened. Knowledge and happiness never decreases by being shared.” - Buddha
Daniel Bowlin
Daniel Bowlin
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Curious, the difference in default behaviour between a DECLARE and a CONVERT.

I suppose this just puts another check mark in the Always Declare Everything column.
Sean Lange
Sean Lange
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Excellent question! I noticed the lack of defining the size and my initial response was 1;1 but since that was not a choice I figured there must be something in convert for default sizes. Had there been an answer of 1;1 I would have assumed that was the correct answer. ;-)

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Thanks very much! This is a question that applies to the category of "things I need to know and will probably run across" and the answer is straight-forward/simple! Ok, I got it wrong, but that's because I have plenty to learn.


(The last couple times I've commented, it was due to being frustrated with the question, thought I might add some positive feedback as well :coolSmile
Enigma475
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This is a very good question. My initial choice was 3/38. It's a good thing I decided to run the code before answering. I learned something new :-) ...
Kangana Beri
Kangana Beri
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Good question. Thank you!
David Data
David Data
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I got it wrong too. But like many questions here, the answer depends on knowing the many inconsistencies and strange rules in SQL Server - most of which you never need to know.

I had no idea how long char and varchar default sizes are, for the simple reason that I've never declared any without specifying the length. IMHO the correct answer should have been 'Syntax Error'!

It would be nice to have a datatype like .NET's string which can carry strings of (almost) any length without worrying about what its contents' maximum length might happen to be. Fields in database tables may need to be specified precisely; local variables should not.
paul.knibbs
paul.knibbs
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David Data (8/10/2010)
It would be nice to have a datatype like .NET's string which can carry strings of (almost) any length without worrying about what its contents' maximum length might happen to be. Fields in database tables may need to be specified precisely; local variables should not.


Isn't that pretty much what VARCHAR(MAX) is?
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