Add DuckDB dialect and e2e integration tests#13
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dannywillems merged 4 commits intomainfrom Feb 10, 2026
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DuckDB does not support AUTOINCREMENT or SERIAL/BIGSERIAL. Instead, auto-increment is implemented via CREATE SEQUENCE + DEFAULT nextval(). The create_table override emits the sequence DDL automatically for every column marked with autoincrement.
The typed builders were not including WHERE clause parameters in their build() output. Select returned empty params, Update only returned SET params, and Delete always returned vec![]. All three now correctly extend params with where_expr.params().
Five tests exercising the full stack: DuckDB dialect DDL generation, typed Insert/Select/Update/Delete builders, and actual DuckDB query execution. Tests cover autoincrement sequences, WHERE param propagation, the consumer scenario (excluded_domains/excluded_ips), and CRUD operations.
Replace the manual Table trait implementation in the top-level docs with a proper tutorial using #[derive(Table)]. Add under-the-hood section showing the macro expansion, typed query examples for SELECT/INSERT/UPDATE/DELETE, and comprehensive migrations docs covering column helpers, operations, dependencies, MigrationRunner workflow, and dialect comparison table. All 21 doc-tests compile.
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Summary
(DuckDB lacks AUTOINCREMENT/SERIAL, so
CREATE SEQUENCE+DEFAULT nextval()is emitted automatically)Select,Update, andDeletebuilders to propagateWHERE clause parameters in
build()outputdatabase using the fully typed builders
Test plan
make test— all 201 tests pass (154 unit + 25 derive + 5duckdb e2e + 5 sqlite + 12 doctests)
make lint— zero clippy warningsmake check-format— formatting clean