jQuery-提取最后一个元素（无数组）

Question

如何提取最后一个元素-“日期”？

预期输出=“ 2019_10_29_12_01_01”

$ cat snapshots.json | jq '.snapshots[] | select (.state == "SUCCESS") | {date: .snapshot}'
{
  "date": "2019_10_21_12_01_01"
}
{
  "date": "2019_10_28_00_01_01"
}
{
  "date": "2019_10_29_12_01_01"
}

Answer 1

使用last，例如：

last(.snapshots[] | select(.state == "SUCCESS"))
| .snapshot