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Korma is a DSL for Clojure that wraps SQL via expressive, composable Clojure constructs. It allows developers to build powerful and reusable database queries using rich abstractions instead of raw SQL strings. The most recent stable release is Korma 0.4.3, as noted above. The current edge release is Korma 0.5.0-RC1 (released Feb 28, 2018). It is not guaranteed to be bug free, and we'd welcome help from the community in identifying any bugs or regressions. The plan is to either release a second release candidate in May or, if no bugs have surfaced, for Korma 0.5.0 to be released at that time.
Features
- Declarative query building with macros like select, insert, update, delete
- Support for joins, unions, subselects, and query composition via Clojure maps
- Utility for printing SQL without executing it (dry-run, sql-only)
- Database connection abstractions via defdb, create-db, and pool configuration
- Data transformation hooks (prepare, transform) to modify inserted or selected rows
- Fully composable and reusable query fragments for elegant construction
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