'use strict'; var async = require('async'); exports.up = function(db, callback) { async.series([ db.runSql.bind(db, 'DELETE FROM clients'), db.runSql.bind(db, 'ALTER TABLE clients ADD COLUMN type VARCHAR(16) NOT NULL'), ], callback); }; exports.down = function(db, callback) { db.runSql('ALTER TABLE clients DROP COLUMN type', function (error) { if (error) console.error(error); callback(error); }); };