text: exports.up = function(knex, Promise) {
    return Promise.all([
      knex.raw(`ALTER TABLE "user" DROP COLUMN salt;`),
      knex.raw(`ALTER TABLE "user" ALTER COLUMN hash TYPE TEXT;`),
    ]);
  }
  
  exports.down = function(knex, Promise) {
    return Promise.all([
      knex.raw(`ALTER TABLE "user" ADD COLUMN salt BYTEA NOT NULL;`),
      knex.raw(`ALTER TABLE "user" ALTER COLUMN hash TYPE BYTEA;`),
    ]) ;
  };
  
  