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05.09.2008 at 01:29AM PDT, ID: 23388680
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How do I populate a new column with  a value of 'empty' in all records?
Tags: MS Access 2000
I used MS Access 2000 to add a new field to an existing table within a database.  During the design phase I set "Allow Zero Lengfth" to Yes.  A VB program reads this table and new fields are required to have  the value to be 'empty', i.e., "".  Otherwise, I get a Run-time error of '94', namely, Invalid use of Null.

I have more than 2000 records in this table.  I realize I could manually enter "" in this column in each record in Datasheet View, but this would naturally take a long time to do.

Using MS Access 2000, how do I set the value in this new field in each of the records to empty, namely, ""?  I am not very knowledgeable about using MS Access.  So you should be rather explicit in what to do.

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Question Stats
Zone: Microsoft
Question Asked By: quantumguy
Solution Provided By: Thomasian
Participating Experts: 2
Solution Grade: A
Views: 13
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05.09.2008 at 01:38AM PDT, ID: 21531137

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05.09.2008 at 02:27AM PDT, ID: 21531300

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05.09.2008 at 03:02AM PDT, ID: 21531414

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05.09.2008 at 04:29AM PDT, ID: 21531739

Rank: Sage

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05.09.2008 at 01:38AM PDT, ID: 21531137
hi quantumguy,

You can run an update query to change all null values in the field to empty strings.
1:
2:
3:
UPDATE tablename
SET fieldname=""
WHERE fieldname IS NULL
Open in New Window
 
05.09.2008 at 02:27AM PDT, ID: 21531300
Thomasian,

As I said, I know very little about MS Access.  Thus, how do I give the commands you show above.
 
05.09.2008 at 03:02AM PDT, ID: 21531414
Ok

First, open your database. Then select Queries-> Create query in design view. Then goto menu View, select SQL view. Paste the code above. Replace tablename by the name of the table you want to update. Replace fieldname by the name of the new field with null values. Goto menu Query, select run.
Accepted Solution
 
05.09.2008 at 04:29AM PDT, ID: 21531739

Rank: Sage

You can also modify the Table design, to set the Default value for the field (that is the value that will be assigned to the field when a new record is created), to be 'empty'.

Open the Database, then select the table, open it in design mode, then select the field, and type the text

empty

in the Default Value box at the bottom of of the field properties, close to where you have the property

Allow Zero Length

set to Yes

AW
 
 
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