什麼是貓鼬相當於爲SQL查詢

Question

select _id from project where projectName = '***' order by viewCount desc limit 5 

我還是新來貓鼬，並有一些表現中間SQL的理解，這是我的嘗試它，因爲我試圖檢索排序回報ObjectId

ProjectModel.find({id}).sort({viewCount: -1}).limit(5).exec( 
    function(err, projects) { 
     ... 
    } 
); 

Answer 1

ProjectModel.find({projectName: '***'}, ["_id"]).sort({viewCount: -1}).limit(5).exec( 
    function(err, projects) { 
     ... 
    } 
);