MongoDB Day 1

创建数据库

db.createCollection("user");

插入字段

//----insert-------
db.user.insert({uid:1,
user_code:'admin',
pwd:'E10ADC3949BA59ABBE56E057F20F883E',
token:'C257EF6754D5FAA3128AC60EFAB120B7',
email:'497586234@qq.com',
name:'林阿乐',
group_id:'U',
Stoper:'',
Stop_dt:'',
login_end:'',
reg_id:1})

查询字段

//----select-------
db.user.find({uid:1}).pretty()

group by 函数

db.user.aggregate([
{$group: {_id: {
	name:"$name"
	,uid:"$uid"
	,token:"$token"}
	,num: {$sum:1}}
}]);

存储过程案例

var cursor = db.user.find({uid:1}); //获取数据库对象
var userLength = db.user.count({uid:1}); //获取用户表数量
print(cursor[0]["name"]); //取第一条的name字段
print(cursor.toArray().length); //将数据转换成Array 然后获取它的length