为什么SQL返回一个数组而不是一个对象？

Question

我正在使用SQL SERVER 2016 JSON结果,但我不知道为什么它将所有内容转换为数组,例如,如果我执行以下查询,它返回一个数组而不是一个对象:

SELECT 1 AS One,2 AS Two,3 AS Three
FOR JSON PATH

结果是:

[{"One":1,"Two":2,"Three":3}]

但是我希望它能回归:

{"One":1,"Two":2,"Three":3}

我也测试了这个查询,但结果是一样的,同样是一个数组:

SELECT TOP 1 1 AS One,2 AS Two,3 AS Three
FOR JSON PATH

Answer 1

你只需要WITHOUT_ARRAY_WRAPPER选项:

SELECT 1 AS One,2 AS Two,3 AS Three
FOR JSON PATH ,WITHOUT_ARRAY_WRAPPER;