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I have a problem with MySql primary keys, it’s for my project i’m working on now!
i have to have a unit name(not a number)as a key in my database, it is a combination of letters and numbers, i can’t use any primary key in INT type, where it increments as usual!
what is better? should i stick to old INT, auto increment way?
or it’s better to use a VARCHAR to primary key? if so what is the ideal data type?
regards,
Rangana
You can keep the primary key as an auto-inc integer column, and then add another column which is a VARCHAR column with a UNIQUE constraint on it.