package migrationsimport ("context""database/sql""github.com/pressly/goose/v3")func init() {goose.AddMigrationContext(upAddFolderHash, downAddFolderHash)}func upAddFolderHash(ctx context.Context, tx *sql.Tx) error {_, err := tx.ExecContext(ctx, `alter table folder add column hash varchar default '' not null;`)return err}func downAddFolderHash(_ context.Context, _ *sql.Tx) error {return nil}