Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Setting datetime field to NULL in SQL using ADO
Message
 
 
To
24/02/2012 10:44:35
Kam Lee
SUNY-Health Science Center
Brooklyn, New York, United States
General information
Forum:
Visual FoxPro
Category:
Client/server
Environment versions
Visual FoxPro:
VFP 6 SP5
OS:
Windows XP
Network:
Windows 2003 Server
Database:
MS SQL Server
Application:
Desktop
Miscellaneous
Thread ID:
01536432
Message ID:
01536438
Views:
40
>>>Hello,
>>>I am connecting to a SQL sevrver 2005 using ADO. in VFP6 prg.
>>>I need to set datetime field in a sql table back to NULL using rs.update.
>>>I tried different ways but it still does not work.
>>>I tried:
>>>rs.Fields("discharge_date").Value=.NULL.
>>>rs.Fields("discharge_date").Value=""
>>>rs.Fields("discharge_date").Value={}
>>>rs.Fields("discharge_date").Value=NULL
>>>rs.Fields("discharge_date").Value="NULL"
>>>
>>>None of above works. I am still not unable to remove the value of the datetime field....
>>>Any idea?
>>>
>>>Thanks,
>>>Kam Lee
>>>SUNY DMC
>>
>>
>>Is the discharge_date field set to allow nulls in the SQL table?
>yes, it allows NULLs
>The field initialized to NULL when the row is first inserted , then it got update to a certain valid date, and then for certain reason I need to set it back to NULL.
>I am running out of options....


I ran a search and found this answer
system.dbnull.value
which perhaps will not work in VFP.

Did you try using a variable, e.g.

ldDate = {} && date value
ldDate = null

and use ldDate variable?
If it's not broken, fix it until it is.


My Blog
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform