How can use LEFT JOIN at Sequelize?

Question

Relations:

Shop.hasMany(ShopAd, {foreignKey : \'shop_id\', as : \'ads\'});
ShopAd.belongsTo(Shop, {foreignKey : \'id\'})

I using :

Answer 1

required: true forces an INNER JOIN, use required: false to force a LEFT JOIN.

Taken from here.

Answer 2

using: required:false

sentences：

Shop.findAll({
     where:{id:shopId}, 
     include:[
         { model:ShopAd, as:'ads', 
           where:{ 
                 is_valid:1, 
                 is_vertify:1},   
           required:false
           }
         ]
      })
      .success(function(result) {
        callback(result);
    });