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读取 JSON

从 24.1 版本起,Alteryx Designer 可以使用“输入数据”工具读取和解析结构化 JSON 数据。目前,AMP Engine 仅支持顶层嵌套对象。

[
    {
        "business_id": "vcNAWiLM4dR7D2nwwJ7nCA",
        "open": true,
        "review_count": 9,
        "hours": {
            "Tuesday": {
                "close": "17:00",
                "open": "08:00"
            },
            "Friday": {
                "close": "17:00",
                "open": "08:00"
            },
            "Monday": {
                "close": "17:00",
                "open": "08:00"
            },
            "Wednesday": {
                "close": "17:00",
                "open": "08:00"
            },
            "Thursday": {
                "close": "17:00",
                "open": "08:00"
            }
        },
        "stars": 3.5
    },
    {
        "business_id": "UsFtqoBl7naz8AVUBZMjQQ",
        "open": true,
        "review_count": 4,
        "hours": {
            "Monday": {
                "close": "21:00",
                "open": "10:00"
            },
            "Tuesday": {
                "close": "21:00",
                "open": "10:00"
            },
            "Friday": {
                "close": "21:00",
                "open": "10:00"
            },
            "Wednesday": {
                "close": "21:00",
                "open": "10:00"
            },
            "Thursday": {
                "close": "21:00",
                "open": "10:00"
            },
            "Sunday": {
                "close": "18:00",
                "open": "11:00"
            },
            "Saturday": {
                "close": "21:00",
                "open": "10:00"
            }
        },
        "stars": 3.5
    },
    {
        "business_id": "cE27W9VPgO88Qxe4ol6y_g",
        "open": false,
        "review_count": 5,
        "stars": 2.5
    }
]

默认设置

读取非结构化表的数据

默认情况下,“输入数据”工具会读取非结构化表的数据。

  • 仅限 AMP读取结构化表的数据复选框 - 取消选中。

  • 仅限非结构化模式将值解析为字符串复选框 - 选中。

将值输出至单个字符串字段:输出两个字段:JSON Name 和 JSON_ValueString。根据上面的输入示例,该工具将会输出以下数据:

JSON_Name

JSON_ValueString

0.business_id

vcNAWiLM4dR7D2nwwJ7nCA

0.open

1

0.review_count

9

0.hours.Tuesday.close

17:00

0.hours.Tuesday.open

08:00

0.hours.Friday.close

17:00

0.hours.Friday.open

08:00

0.hours.Monday.close

17:00

0.hours.Monday.open

08:00

0.hours.Wednesday.close

17:00

0.hours.Wednesday.open

08:00

0.hours.Thursday.close

17:00

0.hours.Thursday.open

08:00

0.stars

3.5

1.business_id

UsFtqoBl7naz8AVUBZMjQQ

1.open

1

1.review_count

4

1.hours.Monday.close

21:00

1.hours.Monday.open

10:00

1.hours.Tuesday.close

21:00

1.hours.Tuesday.open

10:00

1.hours.Friday.close

21:00

1.hours.Friday.open

10:00

1.hours.Wednesday.close

21:00

1.hours.Wednesday.open

10:00

1.hours.Thursday.close

21:00

1.hours.Thursday.open

10:00

1.hours.Sunday.close

21:00

1.hours.Sunday.open

10:00

1.hours.Saturday.close

21:00

1.hours.Saturday.open

10:00

1.stars

3.5

2.business_id

cE27W9VPgO88Qxe4ol6y_g

2.open

0

2.review_count

5

2.stars

2.5

元数据

名称

类型

大小

描述

JSON_Name

V_WString

1073741823

JSON_Input

JSON_ValueString

V_WString

1073741823

JSON_Input

读取结构化表的数据

  • 仅限 AMP读取结构化表的数据复选框 - 选中。

  • 仅限非结构化模式将值解析为字符串复选框 - 无论此复选框是否选中,它都只适用于非结构化数据的读取。

基于顶层 JSON 对象,按相应的数据类型将值输出到多个文件中

business_id

open

review_count

hours

stars

vcNAWiLM4dR7D2nwwJ7nCA

TRUE

9

{"Tuesday":{"close":"17:00","open":"08:00"},"Friday":{"close":"17:00","open":"08:00"},"Monday":{"close":"17:00","open":"08:00"},"Wednesday":{"close":"17:00","open":"08:00"},"Thursday":{"close":"17:00","open":"08:00"}}

3.5

UsFtqoBl7naz8AVUBZMjQQ

TRUE

4

{"Monday":{"close":"21:00","open":"10:00"},"Tuesday":{"close":"21:00","open":"10:00"},"Friday":{"close":"21:00","open":"10:00"},"Wednesday":{"close":"21:00","open":"10:00"},"Thursday":{"close":"21:00","open":"10:00"},"Sunday":{"close":"18:00","open":"11...

3.5

cE27W9VPgO88Qxe4ol6y_g

FALSE

5

2.5

元数据

名称

类型

大小

描述

business_id

V_WString

16384

File: Z:\Downloads\JSON\yelp-academic-datase.json

open

Bool

1

File: Z:\Downloads\JSON\yelp-academic-datase.json

review_count

Int64

8

File: Z:\Downloads\JSON\yelp-academic-datase.json

hours

V_WString

16384

File: Z:\Downloads\JSON\yelp-academic-datase.json

stars

Double

8

File: Z:\Downloads\JSON\yelp-academic-datase.json