fix: parse external_id to string instead of actor id to uuid and allo…

[andrey-canon]

Description

This PR addresses type compatibility issues within various views that involve actor_id fields, where actor_id values could represent either an email address (formatted as mailto:user@example.com) or a UUID. Previously, queries attempted to use toUUID(actor_id) for direct comparison with external_user_id in dim_user_pii, which caused errors when actor_id was not formatted as a UUID.

To resolve this, we modified the join condition for actor_id in all affected views:

• Previous Condition: toUUID(actor_id) = users.external_user_id

• Updated Condition:

(actor_id LIKE 'mailto:%' AND SUBSTRING(actor_id, 8) = users.email)
OR actor_id = toString(users.external_user_id)

This conditional join ensures that:

1. When actor_id represents an email, it strips the mailto: prefix and compares the remaining string with the email field.
2. For UUID values, actor_id is cast to a String for compatibility with external_user_id in dim_user_pii.

[openedx-webhooks]

Thanks for the pull request, @andrey-canon!

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[andrey-canon]

Hi @bmtcril, this pr is ready to review, could you please take a o look of it? thanks :)

[bmtcril]

Thanks for finding and fixing this @andrey-canon ! I'll dig in as soon as I can.

@Ian2012 @saraburns1 heads up on this too

[Ian2012]

Thanks for this fix, tested locally. LGTM

One note, we still need to update Superset virtual datasets to this new format:
https://github.com/search?q=repo%3Aopenedx%2Ftutor-contrib-aspects%20toUUID&type=code