mysql - How do I make 2 columns unique together? -


i have 2 columns:

  • confirmed_email
  • unconfirmed_email

i don't want them overlap. want:

  • confirmed_email unique
  • unconfirmed_email unique
  • confirmed_email + unconfirmed_email unique, if merged together. if "hello@gmail.com" exists in confirmed_email ,then cannot updated unconfirmed_email.

is there setting this?

i doubt want store 2 emails.

use 1 field , add bool field stores whether email confirmed.


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