CODEWITHSUNDEEP
jsonjq
user3595231
user3595231

Reputation: 767

Any idea why the 2nd case not working in jq command?

I thought I had done a lot on jq command. But why the following 2 command, one is working, and the other fails ?

Working case:
echo '{"destinations": {"results": [{"sessions": "16903"}]}}' | jq '.destinations'

{
  "results": [
    {
      "sessions": "16903"
    }
  ]
}

Broken Case:

echo '{"pre-destinations": {"results": [{"sessions": "16903"}]}}' | jq '.pre-destinations'

jq: error: destinations/0 is not defined at <top-level>, line 1:
.pre-destinations
jq: 1 compile error

The root cause is I was using a '-' in the key value, but why it fails ?

Jack

Upvotes: 0

Views: 208

Answers (2)

Rondo
Rondo

Reputation: 3711

The accepted answer doesn't work for any version of jq I've tried. This is the only way I could get it to work:

echo '{"pre-destinations": {"results": [{"sessions": "16903"}]}}' | \
    jq '. | to_entries | .[] | select (.key == "pre-destinations") | .value'

Upvotes: 0

peak
peak

Reputation: 116740

In the key named ".pre-destinations", the hyphen is regarded as a special character, so you would have to quote the key name, e.g.

jq '".pre-destinations"'

or more robustly (with respect to variations between different versions of jq):

jq '["pre-destinations"]'

Upvotes: 2

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