mongodb数据库如何建表

Posted 2023-03-18

参考技术A MongoDB创建表步骤，Mongo常用的数据库操作命令，查询，添加，更新，删除_MongoDB 性能监测。
use Admin (切换到创建用户)
db.TestDb (创建数据库)
db.addUser(“userName”,”Pwd”) 创建用户
db.auth(“userName”,”Pwd”) 设置用户为允许连接的用户
db.createCollection(“TableName”) 创建表
showcollections 查看表是否创建成功
db.TableName.Save(age:1) 添加数据
db.TableName.find() 查看添加的数据是否成功（如果没有查询到任何的结果，说明添加失败）
推荐学习《python教程》。

mongodb_hive建表

create database hive_to_mongodb;
add jar /hgx/mongo-hadoop-core-1.5.1.jar /hgx/mongo-hadoop-hive-1.5.1.jar /hgx/mongo-java-driver-3.2.1.jar;
add jar /jar_tools/mongodb/mongo-hadoop-core-1.5.1.jar /jar_tools/mongodb/mongo-hadoop-hive-1.5.1.jar /jar_tools/mongodb/mongo-java-driver-3.2.1.jar;

CREATE EXTERNAL TABLE rec_o2o_app
(
id string,
uid string,
message string,
time timestamp,
inTime string,
outTime string
)
STORED BY ‘com.mongodb.hadoop.hive.MongoStorageHandler‘
WITH SERDEPROPERTIES(‘mongo.columns.mapping‘=‘{"id":"_id","uid":"uid","message":"message","time":"time","inTime":"inTime","outTime":"outTime"}‘)
TBLPROPERTIES(‘mongo.uri‘=‘mongodb://10.10.10.33:27017/log.REC_O2O-app‘);