SQL查詢構建器：knex.js

knex.js 是一個查詢構建器，用于 PostgreSQL, MySQL 和 SQLite3。它設計靈活，輕便和有趣。

特性：

• transactions

• connection pooling

• streaming queries

• both a promise and callback API

• a thorough test suite

• the ability to run in the Browser

var knex = require('knex')({
  dialect: 'sqlite3',
  connection: {
    filename: './data.db'
  }
});
// Create a table
knex.schema.createTable('users', function(table) {
  table.increments('id');
  table.string('user_name');
})
// ...and another
.createTable('accounts', function(table) {
  table.increments('id');
  table.string('account_name');
  table.integer('user_id').unsigned().references('users.id');
})
// Then query the table...
.then(function() {
  return knex.insert({user_name: 'Tim'}).into('users');
})
// ...and using the insert id, insert into the other table.
.then(function(rows) {
  return knex.table('accounts').insert({account_name: 'knex', user_id: rows[0]});
})
// Query both of the rows.
.then(function() {
  return knex('users')
    .join('accounts', 'users.id', 'accounts.user_id')
    .select('users.user_name as user', 'accounts.account_name as account');
})
// .map over the results
.map(function(row) {
  console.log(row);
})
// Finally, add a .catch handler for the promise chain
.catch(function(e) {
  console.error(e);
});

項目主頁：http://www.baiduhome.net/lib/view/home/1443278026669