前几天发现了sql server 2016支持了json 项目需要所以安装了 用了一下 方便了很多  ，写一下小笔记方便日后查看，也希望各位大神指正共同学习。

sql server 2016 安装图解网上很多，大家注意安装版本就可以了。

--1 带 Root Key

select * from sys_menu for JSON AUTO ,ROOT('Result')

--2  as

select ID,

Name,

Age as [Entity.Age],

Sex as [Entity.Sex]

from Student for json path

-- 3 输出有null列的 sql

select * from sys_menu for JSON AUTO ,ROOT('SUSU'), include_null_values

--4解析json --OPENJSON(将JSON文件转换为普通数据表)

DECLARE @JSalestOrderDetails nVarChar(2000) = '{"OrdersArray": [

{"Number":1, "Date": "8/10/2012", "Customer": "Adventure works", "Quantity": 1200},

{"Number":4, "Date": "5/11/2012", "Customer": "Adventure works", "Quantity": 100},

{"Number":6, "Date": "1/3/2012", "Customer": "Adventure works", "Quantity": 250},

{"Number":8, "Date": "12/7/2012", "Customer": "Adventure works", "Quantity": 2200}

]}';

SELECT Number, Customer, Date, Quantity

FROM OPENJSON (@JSalestOrderDetails, '$.OrdersArray')

WITH (

Number varchar(200),

Date datetime,

Customer varchar(200),

Quantity int

) AS OrdersArray

--5 ISJSON(判断是否是JSON格式)

SELECT ISJSON('{"AAA":1}')

--6 JSON_VALUE(分析JSON文件并提取出值)  ：取出json对象属性为Name的 列  

SELECT JSON_VALUE('{"Order":{"Type":"C","Name":"张三"}}', '$.Order.Name')