Allow schema changes in diffs#252
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Previously when reading entries, there was only one instance of ChangesetTable kept inside the reader, which would get overwritten on a new entry. This is fast when processing entries sequentially, but complicates/slows down the not-uncommon case of keeping entries around for longer.
Assisted-by: Claude Sonnet 4.6
We now explicitly support these schema changes.
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The previously unsupported change is now supported.
Assisted-by: Claude Sonnet 4.6
Assisted-by: Claude Sonnet 4.6
Assisted-by: Claude Sonnet 4.6
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Currently we raise an error if the two databases being compared don't share the same schema. This PR adds new changeset entries and new code to work with databases with different schemata, capturing those schema differences in diffs.
Currently missing: