Question

我试图在json数组中获取英格兰和威尔士值中的日期的所有日期值。像这样的数组（除了它具有更多的值）json数组在这里：{{ 3}}

{"england-and-wales":{"division":"england-and-wales","events":[{"title":"New Year’s Day","date":"2015-01-01","notes":"","bunting":true}},{"title":"Good Friday","date":"2015-04-03","notes":"","bunting":false}]},"scotland":{"division":"scotla
nd","events":[{"title":"New Year’s Day","date":"2015-01-01","notes":"","bunting":true},{"title":"2nd January","date":"2015-01-02","notes":"","bunting":true},{"title":"Good Friday","date":"2
015-04-03","notes":"","bunting":false},{"title":"Early May bank holiday","date":"2015-05-04","notes":"","bunting":true}

如下所述，将选择所有日期：

curl -s https://www.gov.uk/bank-holidays.json | jq '.. | .date? // empty'

我不确定如何只在英格兰和威尔士数组中选择日期吗？

Answer 1

要高效地获取“英格兰和威尔士”的日期，请按以下步骤操作：

.["england-and-wales"] | .events[] | .date

如果您希望这些内容经过排序和“唯一化”，只需延迟逐项（[]）：

.["england-and-wales"] | .events | map(.date) | unique[]

从给定JSON中的特定键获取所有嵌套值

1 个答案: