Question 1

How do I extract a nested JSON value with jql?

Accepted Answer

Use key selectors with double quotes, chaining them for depth, e.g., jql '"parent""child"' input.json. For recursive access, employ the flatten operator .. to simplify nested structures.

Question 2

jql vs jq: which is faster for simple queries?

Accepted Answer

jql is generally faster for basic operations due to its Rust implementation, as shown in benchmarks, but jq offers more features for complex tasks. Choose jql if speed and simplicity are key.

Question 3

Can jql process streaming JSON logs?

Accepted Answer

Yes, use the --stream flag to handle JSON data streamed line by line, such as from Docker logs or real-time outputs, making it suitable for log analysis pipelines.

Question 4

What's the best way to install jql on Windows?

Accepted Answer

Download the pre-compiled binary from GitHub releases or use Cargo if Rust is installed, as Windows package managers aren't listed, but manual installation is straightforward.

Question 5

Does jql support regular expressions for filtering?

Accepted Answer

No, jql does not support regex in queries; it relies on exact key matching and simple selectors, unlike jq which includes regex capabilities for flexible filtering.

Question 6

How to flatten a deeply nested JSON object with jql?

Accepted Answer

Apply the flatten operator .., e.g., jql '..' input.json, which recursively converts nested objects into flat key-value pairs with dot notation for keys.

Question 7

Is jql good for validating JSON files?

Accepted Answer

Yes, use the --validate flag to check JSON integrity and return exit codes based on validity, making it useful for automated testing and data quality checks.

jql

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