看下面两个例子
rs1:PRIMARY> db.display.find({$and: [{$where: '(1386813645 - this.last_active_time > 300)'}, {status: "online"}]}).count()rs1:PRIMARY> db.display.find({$and看下面两个例子
rs1:PRIMARY> db.display.find({$and: [{$where: '(1386813645 - this.last_active_time > 300)'}, {status: "online"}]}).count()rs1:PRIMARY> db.display.find({$and