如何使用 jq 将 json 项目值映射到兄弟数组

Question

json 喜欢

[
  {
    "parent": "x",
    "children": ["a", "b"]
  },
  {
    "parent": "y",
    "children": ["c", "d", "e"]
  }
]

如何用 jq 将其转换为“[parent, child_order_number, child]”项的数组，如

[
  ["x", 0, "a"],
  ["x", 1, "b"],
  ["y", 0, "c"],
  ["y", 1, "d"],
  ["y", 2, "e"]
]

?

Answer 1

jq -c '[.[] | range(.children|length) as $i | [.parent, $i, .children[$i]]]' file

产量：

[["x",0,"a"],["x",1,"b"],["y",0,"c"],["y",1,"d"],["y",2,"e"]]

How to map json item value to sibling array with jq