2.6.1.2.1.1.3. This table does not contain a unique column

If, when working with a database through phpMyAdmin an error occurs «This table does not contain a unique column. Changing the grid, ticking, editing, copying and deleting is not available», necessary execute SQL query to the database:

ALTER TABLE название_tables ADD newid INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST;

Instead название_tables you must put the name of the problem table (without brackets and quotes).