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Json – jq merge 2 rows to 1

{
  "field": "@timestamp",
  "value": "2024-08-20 23:00:13.426"
}
{
  "field": "@message",
  "value": "Started-1"
}
{
  "field": "@timestamp",
  "value": "2024-08-20 23:00:13.427"
}
{
  "field": "@message",
  "value": "Started-2"
}

Edited to show that the JSONs are repeating block

I have JSONs above which need to be merged as below. Please help

[{
  "@timestamp": "2024-08-20 23:00:13.426",
  "@message": "Started-1"
},
{
  "@timestamp": "2024-08-20 23:00:13.427",
  "@message": "Started-2"
}]
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2

Answers


  1. 0 
    file1.json

{
  "field": "@timestamp",
  "value": "2024-08-20 23:00:13.426"
}

file2.json

{
  "field": "@message",
  "value": "Started"
}

jq -s '.[0].value as $timestamp | .[1].value as $message | {"@timestamp": $timestamp, "@message": $message}' file1.json file2.json

    enter image description here

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  2. 0

    You can use the from_entries function, which does exactly what you want, but it requires the future key’s name in a field called key or name. Thus, first transform the objects to meet this requirement (the value field can stay as-is):

    jq -s 'map({key: .field, value}) | from_entries'

    {
  "@timestamp": "2024-08-20 23:00:13.426",
  "@message": "Started"
}

    Demo

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