jq merge arrays inside object [closed]

问题

Closed. This question needs details or clarity. It is not currently accepting answers.

---

Want to improve this question? Add details and clarify the problem by editing this post.

Closed 2 years ago.

Improve this question

I have two objects

{
    "a": [
        "1-1",
        "1-2"
    ],
    ...
}

and

{ 
    "a": [
        "2-1",
        "2-2",
        "2-3"
    ],
    ...
}

there are other keys in both objects, but I don't care for them.

What I want to get is the object where elements of "a" will be concatenated:

{
    "a": [
        "1-1",
        "1-2",
        "2-1",
        "2-2",
        "2-3"
    ],
    ...
}

other keys can be replaced/merged/doesn't matter.

How do I do this with jq?

回答1:

One way would be to use the -s command-line option:

jq -s '.[1].a as $a1 | .[0] | (.a += $a1)'

Since you don't care about the non-a keys, an alternative would be:

jq -n '{a: (input.a + input.a)}' 

Notice the -n option in the line above.

来源：https://stackoverflow.com/questions/50569174/jq-merge-arrays-inside-object