Permission to update single column in SQL Server table

Question

How to create a permission to update a specific column in SQL Table.

This is my scenario - Created a user in DB with Read only permission (only select command work) and I want to create new permission to update a column for a specific SQL table.

Appreciated your help.

Regards
Abdul

Answer 1

Pretty sure you'd just GRANT the permissions like this:

GRANT UPDATE ON dbo.TableName (Col1, Col2, Col7) TO YourUsersName;

Assuming dbo.TableName has 7 columns, Col1-Col7, the above statement will give the user permission to update Col1, Col2, and Col7, but not Col3, Col4, Col5, or Col6.