set column to null mysql code example
Example 1: set column to not null mysql
ALTER TABLE Person MODIFY P_Id INT(11) NOT NULL;
Example 2: C# mysql update statement set value to null
cmd.Parameter.Add(New MySqlParameter("@nome", MySqlDbType.VarChar)).Value = DBNull.Value;
Example 3: mysql alter table column nullable
ALTER TABLE mytable MODIFY mycolumn VARCHAR(255);