The Identity property can't be set on column <Columnname> because it allows null values. (Visual Database Tools)
TOC
Collapse the table of content
Expand the table of content
The document is archived and information here might be outdated

The Identity property can't be set on column <Columnname> because it allows null values. (Visual Database Tools)

Identity columns contain system-generated sequential values that uniquely identify each row within the table. Therefore, identity columns cannot have null values.

For more information, see How to: Modify Column Identity Properties (Visual Database Tools) and How to: Modify Null Options on Columns (Visual Database Tools).

Show:
© 2016 Microsoft