Sql command, several search criteria

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Sql command, several search criteria

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Topic

LiteProgrammer
Starting Member

2 Posts

Posted - 2013-12-04 : 08:51:28

Hi,

I am very new to sql programming. I have a database with 15 columns. At this moment I do this to get all rows containing the year 2013: WHERE DATEPART(yyyy, DownloadDate) = 2013

. But I also want to add a criteria so that I can have all rows where DownloadDate contains 2013 AND WHERE IsRead(BIT) contains NULL. I tried this: WHERE DATEPART(yyyy, DownloadDate) = 2013 AND IsRead = null

. But this gave me nothing!

Thx for help

NeedHelp

MIK_2008
Master Smack Fu Yak Hacker

1054 Posts

Posted - 2013-12-04 : 08:55:19

use "isRead IS NULL" instead of "= null"

Cheers
MIK

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-12-04 : 09:47:14

also make the data filter condition as


DownloadDate > = '20130101' AND DownloadDate < '20140101'

if you want to make use of an existing index on it

see
http://visakhm.blogspot.com/2012/12/different-ways-to-implement-date-range.html

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LiteProgrammer
Starting Member

2 Posts

Posted - 2013-12-05 : 08:22:22

Thanks for all your help. It worked like magic :)

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