json - Hive 从 json 行中选择一个特定的字符串

Question

我试图分析 Athena 中的 AWS 云跟踪日志，如果我选择安全组添加入站规则事件，它会在元素列中返回以下字符串。

{"groupId":"sg-XXXX","ipPermissions":{"items":[{"ipProtocol":"tcp","fromPort":22,"toPort":22,"groups":{},"ipRanges":{"items":[{"cidrIp":"0.0.0.0/0"}]},"prefixListIds":{}}]}}

但我需要groupId单独从那个 json 结果中。那么我怎样才能得到呢？

注意：表是外部表

Answer 1

select json_extract_scalar('{"groupId":"sg-XXXX","ipPermissions":{"items":[{"ipProtocol":"tcp","fromPort":22,"toPort":22,"groups":{},"ipRanges":{"items":[{"cidrIp":"0.0.0.0/0"}]},"prefixListIds":{}}]}}','$.groupId');
OK
sg-XXXX