你说的是关联吗？如果是可以这样操作：先npm install mohair

#你可以先用mohair构建漂亮的mysql操作代码.
    mohair = require 'mohair'
    Article = mohair.table 'aticle a'
    join = 'LEFT JOIN comment b on a.id = b.article_id'
    ArticleQuery = Article
      .join(join)
      .group('a.id')
      .select('*')
      .where('XXX');

    ArticleQuery.query(ArticleQuery.sql(), ArticleQuery.params(), function(err, results) {
        # result为查询结果
    });