otter-sql
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🦦 An Embeddable SQL Executor in Rust
This is still WIP and essentially an unpublished project
OtterSQL implements a generic intermediate code (IC) with an instruction set for tabular data operations. This IC can be used to make in-memory mocks of larger databases such as MySQL and SQLite. This IC is executed by the OtterSQL VM. This project also provides a frontend that compiles a generic dialect of SQL to the IC.
The primary goal for this project is to facilitate developers in testing their SQL-backed applications. The long term goal is to have an embeddable SQL VM for use in client-side applications.
Non-goals (for now): performance, concurrency, persistence, ACID compliance.
Introduction
See this blog post for an introduction of OtterSQL.
Using as a library
Features
Currently implemented
- [x]
CREATE TABLE
/CREATE SCHEMA
- [x]
INSERT
values - [x] Projection (
SELECT
ing specific columns) - [x] Filter (
WHERE
clause ofSELECT
) with complex expressions - [x]
LIMIT
- [x]
ORDER BY
In-progress or in the near future
- [ ]
UPDATE
: execution - [ ] Unions and Joins: execution
- [ ] Group by: execution
- [ ] Nested
SELECT
: codegen and execution - [ ] Common table expressions (CTEs): codegen and execution
- [ ] Uphold table constraints: codegen and execution
In the far future
- [ ] MySQL dialect and features
- [ ] SQLite dialect and features
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Mascot
Meet the official mascot of OtterSQL. He lives in the sea and loves reading books.