When I click the "edit" pencil on my PRIMARY key on a simple table, a message in a red box says
("PRIMARY" must be the name of and only of a primary key!)
Well, it is. The PRIMARY index is defined on a column called "time_stamp", which is, surprisingly, a timestamp. The index name and index type are both "PRIMARY". Nothing fancy about it. The time_stamp field is defined as CURRENT_TIMESTAMP, not NULL.
Everything seems to work OK. So what is this error message all about? I have never attempted to create records with the same timestamp.
Using MySQL 5.5, Safari on Mac OS 10.7.3.