I started a database without defining a primary key, and in the ID entry, the first entry of the column, '0' was entered as an input a few times.
Now, I believe because a primary key is not defined, I have the following message at the top of the "Browse" window in phpMyAdmin:
"Current selection edosot contain a u nnique column. Grid edit, checkbox, Edit, Copy and Delete features are not available. Documentation"
When I try to define the ID entry as the primary variable, I get an error message
"Duplicate entry '0' for key primary"
To be honest, I am going to go ahead and just delete and reenter the table, but I would like to know what can be done to be able to amend this in the future.
Thanks for your help!!