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sql query for null value

Posted on 2016-07-26
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Last Modified: 2016-07-26
Hello,


Datetime column inserting 1/1/1900 for null value

Have a code ,which does job for time but not date

[PickUpTime]  = CASE when @PickUpTime= '' then NULL else CAST(@PickUpTime  AS  nvarchar(20)) end ,  


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Question by:RIAS
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2 Comments
 
LVL 66

Accepted Solution

by:
Jim Horn earned 2000 total points
ID: 41729520
Eyeball this table in table design and see if the column is defined NOT NULL, and if so you'll need to change it to allow NULLs.

Right-click on table > Script Table As ... > Create To > New Query Window Editor..

-- Change the column definition to allow NULLs
ALTER TABLE YourTableName
ALTER COLUMN PickUpTime datetime NULL

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>Datetime column
>CAST(@PickUpTime  AS  nvarchar(20)) end ,  
So which is it ... a datetime column or a nvarchar(20)) column?  Storing date values in a varchar column is a poor programming practice as it will allow all sorts of values that are not convertable to dates, which will throw an error.
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Author Closing Comment

by:RIAS
ID: 41729527
Thanks!
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