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后遗症:如何找到马克斯元素
原标题:Sequelize: how to find a Max element

我在形成一个后遗症时,有问题:

我的原住民问题是这样。

       SELECT max(id),vehicleID FROM `vehicles` WHERE `vehicles`.`vsr_id`=342;

为此,我试图制定类似法律。

    Vehicle.find({ where: {  vsr_id : 342 }, order : [sequelize.fn( max , sequelize.col( id ))] }).success(function(vehicles){
       console.log("Something i got" + vehicles)
        })

It throwing an error : sequelize Object [object Object] has no method col and i refered from this URL: http://sequelizejs.com/docs/latest/models#block-34-line-8

我最后就没有任何法典。 请帮助我

FYI: Ignore semicolons

问题回答

请你尝试

Vehicle.max( id , {where : { vsr_id : 342 }})
.then(function(vehicle_id){
   ...
})
.error(function(error){
   ...
});

可以通过以下方式提出:

Vehicle.findAll({
  attributes: [
     sequelize.fn( MAX , sequelize.col( id ))
  ],
  where: {
    {  vsr_id : 342 }
  }
});

努力使用:

Vehicle.findAll({
        attributes: [Sequelize.fn( max , Sequelize.col( id ))],
        raw: true,
    })

查阅,请提供更多信息。

添加“......引起这一问题”。

 Vehicle.findAll({
    where: {},
    ....
    attributes:[[sequelize.fn( max , sequelize.col( id )), max ]]
})




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