Compare lists and identify common items & differences using custom keys

This workflow compares two lists of objects (List A and List B) using a user-specified key (e.g. email, id, domain) and returns:

- Items common to both lists (based on the key) - Items only in List A - Items only in List B

How it works: 1. Accepts a JSON input containing: - listA: the first list of items - listB: the second list of items - key: the field name to use for comparison 2. Performs a field-based comparison using the specified key 3. Returns a structured output: - common: items with matching keys (only one version retained) - onlyInA: items found only in List A - onlyInB: items found only in List B

Example Input: json { "key": "email", "listA": [ { "email": "alice@example.com", "name": "Alice" }, { "email": "bob@example.com", "name": "Bob" } ], "listB": [ { "email": "bob@example.com", "name": "Bobby" }, { "email": "carol@example.com", "name": "Carol" } ] }

Output: - common: [ { "email": "bob@example.com", "name": "Bob" } ] - onlyInA: [ { "email": "alice@example.com", "name": "Alice" } ] - onlyInB: [ { "email": "carol@example.com", "name": "Carol" } ]

Use Cases: - Deduplicate data between two sources - Find overlapping records - Identify new or missing entries across systems

This workflow is useful for internal data auditing, list reconciliation, transaction reconciliation, or pre-processing sync jobs.