Question

我创建了一个名为test3的简单表

create table if not exists test3(

   Studies varchar(300) not null,
   Series varchar(500) not null
   );

我得到了一些json数据

{
        "Studies": [{
                "studyinstanceuid": "2.16.840.1.114151",
                "studydescription": "Some study",
                "studydatetime": "2014-10-03 08:36:00"
        }],
        "Series": [{
                "SeriesKey": "abc",
                "SeriesInstanceUid": "xyz",
                "studyinstanceuid": "2.16.840.1.114151",
                "SeriesDateTime": "2014-10-03 09:05:09"
        }, {
                "SeriesKey": "efg",
                "SeriesInstanceUid": "stw",
                "studyinstanceuid": "2.16.840.1.114151",
                "SeriesDateTime": "0001-01-01 00:00:00"
        }],

        "ExamKey": "exam-key",
}

这是我的json_path

{

    "jsonpaths": [
        "$['Studies']",
        "$['Series']"
    ]

}

json数据和json路径都上传到s3。

我尝试在redshift consule中执行以下复制命令。

copy test3
from 's3://mybucket/redshift_demo/input.json'
credentials 'aws_access_key_id=my_key;aws_secret_access_key=my_access' 
json 's3://mybucket/redsift_demo/json_path.json'

我收到以下错误。任何人都可以帮助你坚持一段时间了。

Amazon](500310) Invalid operation: Number of jsonpaths and the number of columns should match. JSONPath size: 1, Number of columns in table or column list: 2
Details: 
 -----------------------------------------------
  error:  Number of jsonpaths and the number of columns should match. JSONPath size: 1, Number of columns in table or column list: 2
  code:      8001
  context:   
  query:     1125432
  location:  s3_utility.cpp:670
  process:   padbmaster [pid=83747]
  -----------------------------------------------;
1 statement failed.

执行时间：1.58s

Answer 1

Redshift的错误令人误解。问题是你的输入文件格式错误：在最后一个JSON条目之后你有一个额外的逗号。

如果您将Copy更改为"ExamKey": "exam-key",

，

"ExamKey": "exam-key"会成功

亚马逊redshift副本使用json有麻烦

1 个答案: