Question

spark sql 怎样处理日期类型

Answer 1

json File 日期类型 怎样处理？怎样从字符型，转换为Date或DateTime类型？

json文件如下，有字符格式的日期类型

```
{ "name" : "Andy", "age" : 30, "time" :"2015-03-03T08:25:55.769Z"}
{ "name" : "Justin", "age" : 19, "time" : "2015-04-04T08:25:55.769Z" }
{ "name" : "pan", "age" : 49, "time" : "2015-05-05T08:25:55.769Z" }
{ "name" : "penny", "age" : 29, "time" : "2015-05-05T08:25:55.769Z" }
```
默认推测的Schema：
```
root
|-- _corrupt_record: string (nullable = true)
|-- age: long (nullable = true)
|-- name: string (nullable = true)
|-- time200: string (nullable = true)