[5.0.3] Fixes to database collation migrations #23809
Merged
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Fixes #23794
Description
When generating migrations, if a database collation is configured and non was previously configured, a mangled migration is generated which does not compile.
Customer Impact
Any user trying to explicitly set a collation on an existing database will fail and would have to manually edit generated migration source code.
How found
Customer reported on 5.0.2.
Test coverage
We have added test coverage in this PR.
Regression?
No, collation support was only introduced in 5.0.
Risk
Low. Only affects the faulty code path, which is part of design-time migration generation (no runtime impact).