text: exports.up = function(knex, Promise) {
    return knex.schema.createTable('users', tbl => {
      tbl.increments();
      tbl.string('uid', 500).unique();
      tbl.string('username', 50);
      tbl.string('First_name', 50);
      tbl.string('Last_name', 50);
      tbl.string('phone', 20);
      tbl.string('email', 50).unique();
      tbl.string('address', 100);
      tbl.string('role', 50);
    });
  };
  
  exports.down = function(knex, Promise) {
    return knex.schema.dropTable('users');
  };
  