在 Redshift 中将 json 格式的列拆分为多列

Question

select feature_column from table

{"reporting": true, "newsletters": false, "merchant_payment": false, "customer_feedback": true, "reserve_with_google": true, "new_closingtime_background": true, "merchant_logo_on_customer_email": true}
{"messaging": false, "yext_sync": false, "marketplace": false, "newsletters": false, "ranking_coach": false, "sms_reminders": false, "sms_newsletters": false, "merchant_payment": true, "customer_feedback": true, "birthday_reminders": false, "merchant_dashboard": true, "merchant_shiftplan": false, "reserve_with_google": false, "sms_customer_confirmation": false, "individual_email_from_name": true, "appointment_location_customer": false}
{"messaging": false, "newsletters": false, "merchant_payment": false, "birthday_reminders": false, "merchant_shiftplan": false, "double_opt_in_required": false, "new_closingtime_background": true, "facebook_instagram_integration": true, "show_all_branch_option_on_insights": true, "show_newsletter_non_subscriber_selection": false}

我不想将所有这些值存储在一列中，而是想将其转换为表格形式：

No. reporting      newsletters       merchant_payment       customer_feedback    
1     true            false               false                     true
2     false           false               true                      true
3     false           false               false                     false

据我所知，json ->> 功能在 Redshift 过时的 Postgres 版本中不可用。

Answer 1

我假设这些是 Redshift 中包含 json 的字符串（不是新的 Super 数据类型）。 Redshift 有几个 json 解析函数 - https://docs.aws.amazon.com/redshift/latest/dg/json-functions.html

我想你想使用 json_extract_path_text() 函数 - https://docs.aws.amazon.com/redshift/latest/dg/JSON_EXTRACT_PATH_TEXT.html

select json_extract_path_text(feature_column, '{reporting}') as reporting from ...

在 Redshift 中将 json 格式的列拆分为多列

Split json-format column into multiple columns in Redshift

sql

json

amazon-redshift