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T-SQL query


T-SQL query

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Raghav-673586
Raghav-673586
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Comments posted to this topic are about the item T-SQL query
Vivien Xing
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Very tricky! I made a guess. Yes. Anything is possible.
hodgy
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you could use a case statement:

where
case month(dob)
when 1 then 1
when 3 then 1
when 4 then 1
when 5 then 1
when 7 then 1
when 8 then 1
else 0 end = 1

Life: it twists and turns like a twisty turny thing

David McKinney
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Handy to know...I'm sure I'll be using that in my code very soon!
Knut Boehnert
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That was a very nice question for a Friday morning.

Another solution would be:
datepart(m,dob) between 1 and 8
and datepart(m,dob) <> 2
and datepart(m,dob) <> 6

Though the single condition definitely beats this solution.
Kevin Gill
Kevin Gill
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Knut Boehnert (5/2/2008)
That was a very nice question for a Friday morning.

I'd have to disagree. I think these ones about working out pointless conditions to satisfy one off special cases that nobody will EVER use, are more about your ability (and level of interest) in working out what's different about those months than the others. As such, they have almost nothing to to with T-SQL (which was the 'Question Type') other than that they chose to write the solution in it. I imagine many people will simply guess yes (there's usually a way to do anything that starts with 'is there a way...') without really knowing why. I decided to be contrary and guessed no, based on the last (equally pointless) one of these being 'yes'.

-- Kev

-------------------------------
Oh no!
Anipaul
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Kevin Gill (5/2/2008)
Knut Boehnert (5/2/2008)
That was a very nice question for a Friday morning.

I'd have to disagree. I think these ones about working out pointless conditions to satisfy one off special cases that nobody will EVER use, are more about your ability (and level of interest) in working out what's different about those months than the others. As such, they have almost nothing to to with T-SQL (which was the 'Question Type') other than that they chose to write the solution in it. I imagine many people will simply guess yes (there's usually a way to do anything that starts with 'is there a way...') without really knowing why. I decided to be contrary and guessed no, based on the last (equally pointless) one of these being 'yes'.

-- Kev



Kevin all solutions may not be the best but sometimes these type of solutions/questions shake our brains. We sometimes do monotonous work, so this solutions help us to break the shackle. We learnt something differently is also interesting. Cool



Danny Ocean
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You can use UNION...

good one...Wink

Thanks
Vinay Kumar
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WayneS
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Since the question clearly states:

The condition should not use both IN and OR operators.


use could use:
where DatePart(m, ) IN (1,3,4,5,7,8)

OR is not used, so since they BOTH aren't used, this is valid.

you also could use:
where DatePart(m, date) = 1
or DatePart(m, date) = 3 ....
as long as you don't use IN, this also would satisify the requirement not to use both.

The question should have stated
The condition should not use either the IN and OR operators.

Yes, I know what was meant. But the requirements didn't adequately specify the intention.

Wayne
Microsoft Certified Master: SQL Server 2008
Author - SQL Server T-SQL Recipes
If you can't explain to another person how the code that you're copying from the internet works, then DON'T USE IT on a production system! After all, you will be the one supporting it!
Links: For better assistance in answering your questions, How to ask a question, Performance Problems, Common date/time routines,
CROSS-TABS and PIVOT tables Part 1 & Part 2, Using APPLY Part 1 & Part 2, Splitting Delimited Strings

ronmoses
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WayneS (5/2/2008)
Since the question clearly states:

The condition should not use both IN and OR operators.

use could use:
where DatePart(m, ) IN (1,3,4,5,7,8)

OR is not used, so since they BOTH aren't used, this is valid.

Exactly the answer I was about to give. Smile I figured the question had to have been misworded, it's a complete no-brainer as is.

Ron Moses

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a haiku...

NULL is not zero
NULL is not an empty string
NULL is the unknown

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