在对象数组中展平或 "explode" 数组值字段？

Question

我有这个数据：

[
  { "path": "x", "types": ["a", "b"] },
  { "path": "y", "types": ["c", "d"] }
]

我希望获得此输出：

{ "path": "x", "type": "a" }
{ "path": "x", "type": "b" }
{ "path": "y", "type": "c" }
{ "path": "y", "type": "d" }

我如何使用 Jq 执行此操作？

Answer 1

尝试

.[] | {path, type: .types[]}

{"path":"x","type":"a"}
{"path":"x","type":"b"}
{"path":"y","type":"c"}
{"path":"y","type":"d"}

Demo

使用 --compact-output 或 -c 选项也可以获得相同的 compact 格式。

---

编辑：

This is documented in the manual under the heading "Object Construction: {}". Specifically the statement, "If one of the expressions produces multiple results, multiple dictionaries will be produced."

感谢 查找。