Set to Null in Access query

I have a Date/Time, Number, and text field in one table, and want to reset them all to NULL.
Access gives me a "type conversion" error.  Any ideas what I am doing wrong?

update scratchoff set Reward = Null ,  Redeemed = Null, Email = Null where Email like '*';
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Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
Is that the full SQL string you're trying to run? Can you show the full code snippet?
rrhandle8Author Commented:
Yes, that is the full string.  I changed from using % to using *, but that didn't work either.
Rey Obrero (Capricorn1)Commented:

update scratchoff set Reward = "" ,  Redeemed = "", Email = "" where Email like '*';

for testing to find which field is giving the error, update the fields one at a time using three update queries

update scratchoff set Reward = Null where Email like '*';

update scratchoff set Redeemed = Null where Email like '*';

update scratchoff set  Email = Null where Email like '*';

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Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
Is the data stored in Access? Or in SQL Server (or some other server database)?
Try: If using access,
DoCmd.RunSQL "update scratchoff set Reward = Null ,  Redeemed = Null, Email = Null where Email like ""*"""

Open in new window

In SQL Null is inserted, and when viewed in access it shows blank.
Helen FeddemaCommented:
What data type is each field?  It may be better to save a zero-length string ("") to a text field, a 0 to a numeric field, and this peculiar value (representing an unselected date) to a Date field:

#12:00:00 AM#
rrhandle8Author Commented:
Rey, when I did it one field at a time, all three fields update.  Hmm.... wonder if there is a problem with updating multiple fields when one of the fields is included in the WHERE clause?  Anyways, thanks, I got the job done.
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
No, there's no trouble with update multiple fields based on any specific fields included in the WHERE clause.
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