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')
