c55b7ce · reshape · git.iko.soy

500 # For backwards compatibility, we will write back to the removed `email` column whenever `profiles` is changed

501 [actions.down]

502 table = "profiles"

503− value = "email"

503+ value = "profiles.email"

504− where = "id = user_id"

504+ where = "users.id = profiles.user_id"

505```

506

507### Indices

635 # When `profiles` is changed in the new schema, we write the email address back to the removed column

636 [actions.down]

637 table = "profiles"

638− value = "email"

638+ value = "profiles.email"

639− where = "id = user_id"

639+ where = "users.id = profiles.user_id"

640

641[[actions]]

642type = "add_column"

650 # When `users` is updated in the old schema, we write the email value to `profiles`

651 [actions.up]

652 table = "users"

653− value = "email"

653+ value = "users.email"

654− where = "user_id = id"

654+ where = "profiles.user_id = users.id"

655```

656

657_Example: turn a 1:N relationship between `users` and `accounts` into N:M and change the format of the associated `role`_

680 [actions.up]

681 table = "users"

682 values = { user_id = "id", account_id = "account_id", role = "UPPER(account_role)" }

683− where = "user_id = id"

683+ where = "user_account_connections.user_id = users.id"

684

685[[actions]]

686type = "remove_column"

690 # When `user_account_connections` is updated, we write the `account_id` back to `users`

691 [actions.down]

692 table = "user_account_connections"

693− value = "account_id"

693+ value = "user_account_connections.account_id"

694− where = "id = user_id"

694+ where = "users.id = user_account_connections.user_id"

695

696[[actions]]

697type = "remove_column"

701 # When `user_account_connections` is updated, we write the lowercase role back to `users`

702 [actions.down]

703 table = "user_account_connections"

704− value = "LOWER(role)"

704+ value = "LOWER(user_account_connections.role)"

705− where = "id = user_id"

705+ where = "users.id = user_account_connections.user_id"

706```

707

708## Commands and options