ALTER TABLE: Add a new boolean column with default value and checkbox

Question

What is the correct Access DDL query to add a Boolean datatype column to a table?

So far I\'ve seen examples like the following...

ALTER TABLE MyTabl         


        

Answer 1

In access the Yes/No data type is a logical field that can display yes/no, true/false, or on/off. When you look at VBA code the true and false constants are equivalent to -1 and 0.

If you use this field to populate a check box it will function properly.

You may be able to Change your alter statement to use "YESNO" as such:

ALTER TABLE mytable ADD mynewcolumn YESNO

That should give you the desired check box in the access table column.