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d8c83fb824
If there are two concurrent requests to create or edit change requests,
two separate ones may be created in parallel. The UI does not currently
handle this scenario, and if additional changes are made, they might be
added to a random existing change request—resulting in a messy and
unpredictable state.
This PR adds a unique index to the `change_requests` table
```
on (created_by, project, environment)
WHERE state NOT IN ('Applied', 'Cancelled', 'Rejected', 'Scheduled').
```
In the extremely rare case where such conflicting data already exists in
a database, the migration will automatically cancel one of the
conflicting change requests.
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| .. | ||
| lib | ||
| mailtemplates | ||
| migrations | ||
| test | ||
| migrator.ts | ||
| server-dev.ts | ||
| server.ts | ||
| test-setup.ts | ||