Add support for rename in unbuffered migrations#702
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…me support - AGENTS.md: update unsupported features to reflect partial rename support - pkg/applier/README.md: update UpsertRows signature to use ColumnMapping - pkg/checksum/README.md: column intersection -> column mapping - pkg/repl/README.md: update watermark optimization docs (both chunkers support it) - pkg/statement/README.md: add ColumnRenameMap() to ALTER TABLE features - pkg/table/README.md: add MappedChunker and ColumnMapping sections
aparajon
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Apr 28, 2026
This was referenced May 8, 2026
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Fixes #701
Much of the required functionality merged ahead of this.