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Case vs IIF

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Topic

theKid27
Starting Member

21 Posts

Posted - 2013-09-03 : 02:07:39

Hi Experts/Members,

Need some advice on Case in SQL and IIF in Access, below are my scripts. I'm trying to convert to sql, I'm almost there but some of it is still wrong somehow, don't understand what causes this.

Access:
IIf(([DDate]-Date())>=0 And ([DDate]-Date())<7,"A",
IIf(([DDate]-Date())>=7 And ([DDate]-Date())<14,"B",
IIf(([DDate]-Date())>=14 And ([DDate]-Date())<21,"C",
IIf(([DDate]-Date())>=21 And ([DDate]-Date())<28,"D"))))

SQL:

CASE
WHEN(([DDate]-GETDate())>=0 And ([DDate]-GETDate())<7) THEN 'A'
WHEN(([DDate]-GETDate())>=7 And ([DDate]-GETDate())<14) THEN 'B'
WHEN(([DDate]-GETDate())>=14 And ([DDate]-GETDate())<21) THEN 'C'
WHEN(([DDate]-GETDate())>=21 And ([DDate]-GETDate())<28) THEN 'D'
END

For e.g.
DDate =9/19/2013
[DDate]-Getdate() = 16

Access returns --> D

Sql returns --> C

Appreciate if anyone can advice on this

bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2013-09-03 : 03:16:33

--use DATEDIFF() in the SQL Server

CASE 
WHEN (DATEDIFF(DD, GETDATE(), [DDate]) BETWEEN 0 And 6) THEN 'A'
WHEN(DATEDIFF(DD, GETDATE(), [DDate]) BETWEEN 7 And 13) THEN 'B'
WHEN(DATEDIFF(DD, GETDATE(), [DDate]) BETWEEN 14 And 20) THEN 'C'
WHEN(DATEDIFF(DD, GETDATE(), [DDate]) BETWEEN 21 And 27) THEN 'D'
END

--
Chandu

theKid27
Starting Member

21 Posts

Posted - 2013-09-03 : 03:35:24

Thank bandi appreciate for the help.. i get the trick

bandi
Master Smack Fu Yak Hacker

2242 Posts

Posted - 2013-09-03 : 05:28:41

quote:
Originally posted by theKid27

Thank bandi appreciate for the help.. i get the trick

Welcome

--
Chandu

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-09-03 : 09:31:25

you could simply simplify it as


CHAR((DATEDIFF(DD, GETDATE(), [DDate])/7) + 65)

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