This table does not contain a unique column. Eh?

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Im a little lost (i am totally new) and cant seem to solve this error:

"This table does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available."

This is reference to my newly created DB and table. I executed a very simple SQL query "SHOW TABLES" which works fine but then it shows me this error...

Is this caused by me having two 'primary columns'? - I have tried just to have one but MySQL keeps wanting to make 2 primary tables....

Thanks for your patience - all advice is REALLY helpful!

* I worked out that this error is relevant to this particular SQL Query command - but, still, it's an error that im keen to solve....


set primary key for auto increment field
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