KarpelesLab / psql / 22834113307

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github

Merge remote features (RETURNING, ILike, IsDuplicate, subqueries, typed slices)

Resolve conflicts in error.go, insert.go, replace.go by integrating remote
PostgreSQL RETURNING support and IsDuplicate with dialect-based dispatch:
- Add ReturningRenderer interface for RETURNING clause support
- Add DuplicateChecker interface for engine-specific duplicate detection
- IsDuplicate delegates to registered dialect checkers (PG via SQLState,
  MySQL via error 1062, SQLite via message matching)
- Insert/InsertIgnore/Replace use ReturningRenderer to decide RETURNING

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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