Solved

Date field to NULL using rdoQuery

Posted on 1997-12-17
4
265 Views
Last Modified: 2009-07-29
How can I set a date field in a table to 'NULL' using the rdoQuery object? If I set the rdoParameter value to NULL I get an error!
0
Comment
Question by:roywijmans
  • 2
4 Comments
 
LVL 2

Expert Comment

by:Jim_SQL
ID: 1089719
Hi,

I don't know the answer to your question since I've never worked with RDO, but... I would try one (all) of the following:

- if you pass a query then use the 'null' word (doesn't sound likely)
- if it is a property of an object, try setting it to 'nothing' in VB or else the equivilent in your language
- otherwise... set it to the standard 'null' value of datetimes (I think it's Jan 01 1790 or something)
- or... is it possible that the field doesn't allow nulls (so you need to use Jan 01 if you can't re-create your table to allow nulls)

(Hope this helped, I'd send this as a comment, but if its right I don't think I'd get points...?)
Jim
0
 

Author Comment

by:roywijmans
ID: 1089720
I use Visual Basic 5 and simply setting the rdoParameter to NULL doesn't work. What I want is just setting the field to NULL and the field does allow null values
0
 
LVL 9

Accepted Solution

by:
cymbolic earned 200 total points
ID: 1089721
Try the string value of Null.  This is interpreted on the server as a null in the database when used in Insert statements.  Also, in some instances, such as importing from text files, a blank field is also interpreted as a null on the server when defined as datetime.  Another setting may be a zero length string "". One of these has to work, or it can't be done!

The only other way around it would be to use a separate query where you encounter a missing (or null) date.
0
 

Author Comment

by:roywijmans
ID: 1089722
I made a mistake, I can update using rdoQuery but not with the connection designer! If I execute a store-proc like a method.


0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Slowly Changing Dimension Transformation component in data task flow is very useful for us to manage and control how data changes in SSIS.
I have a large data set and a SSIS package. How can I load this file in multi threading?
Via a live example, show how to extract information from SQL Server on Database, Connection and Server properties
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question