feat: add elementId function

[imilinovic]

Release note

Added the elementId() scalar function. It returns the same identifier as id(), formatted as a string for compatibility with external integrations; filtering by elementId(n) = "<id>" uses the same id-based scan as id().

Related product PRs

PRs from product repo this doc page is related to:

• feat: add elementId function memgraph#4265

Checklist:

• Add appropriate milestone (current release cycle)
• Add bugfix or feature label, based on the product PR type you're documenting
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• Check all content with Grammarly
• Perform a self-review of my code
• The build passes locally
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Project	Deployment	Actions	Updated (UTC)
documentation	Ready	Preview, Comment	Jun 15, 2026 6:55am