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Set Column Default Value SQL syntax error in Access 2003

dschrishuhn asked
Medium Priority
Last Modified: 2012-05-06

What I want to do is add a new column to an existing table and set the default value.  I've been playing around with syntax for a while, maybe you guys can help me.  Thanks in advance

Dim db As DAO.Database
Set db = CurrentDb()
CurrentDb.Execute "ALTER TABLE tblagedinvoices ADD COLUMN omar LONG"
CurrentDb.Execute "ALTER TABLE tblagedinvoices ALTER COLUMN omar SET DEFAULT '0'"

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try removing the quotes around the 0
I would use the DAO Tabledef and aff the field there. I don't think th DEFAULT can be set in the ALTER TABLE.
Cheers, Andrew


Thanks for the quick response.  I've tried it with and without single quotes and I've also tried #0# with no luck.

One thing I did notice is in the vba code window, when I mouse-over "DEFAULT" it shows DEFAULT = 0.      Not sure why since I haven't even declared it, much less defined it.


Hi Andrew,

Could you give an example in code? Thanks- O
To do this in DAO then use the code below
Cheers, Andrew
Dim db As Database
Dim td As TableDef
Dim fld As Field
    Set db = CurrentDb
    Set td = db.TableDefs("tblagedinvoices")
    Set fld = td.CreateField("Omar", dbLong)
    fld.DefaultValue = 0
    td.Fields.Append fld
    Set td = Nothing

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Thanks Andew, I just tried your code.
It creates the new field in the table, but doesn't show the default value.  I've also tried with different numbers apart from 0.  The entire column has no values.
It executed without error.

Thank you for your help so far

The code sets the default value. It does not update existing records, for that you will have to run an UPDATE query

UPDATE tblagedinvoices SET omar = 0

Cheers, Andrew

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Your code executed without error.  I opened up the table and saw that it did create the new column "Omar" as the correct datatype but it didn't populate the default value.  I got on the wagon after ADO, so I   think I'll have to research the DAO .fields.append method.

Regardless, as you suggested, I was able to use an update qry to do what I want.  Originally, I thought I'd be able to do it all in the same statement.

Final Product:

CurrentDb.Execute "ALTER TABLE tblagedinvoices ADD COLUMN omar LONG"
CurrentDb.Execute "UPDATE tblagedinvoices SET omar = 0"
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