Niwaka

Support failable initializers

1

Related to #235. This PR supports failable initializers. Something like: ```rust // Rust side #[swift_bridge::bridge] mod ffi { extern "Rust" { #[swift_bridge(Equatable)] type FailableInitType; #[swift_bridge(init)] fn new() -> Option; }...

feat: support `WITHIN` filter

17

I hereby agree to the terms of the [GreptimeDB CLA](https://github.com/GreptimeTeam/.github/blob/main/CLA.md). ## Refer to a related PR or issue link (optional) Part of #3755. This PR supports `within` syntax like: ```sql...

Make `EXPLAIN STATEMENT` show logical and physical plans to run on regions

2

### What type of enhancement is this? User experience ### What does the enhancement do? Greptimedb already supports distributed `EXPLAIN ANALYZE STATEMENT`(#3908). However, `EXPLAIN STATEMENT` like `EXPLAIN select * from...

In addition, I'd like to support JIT in Rust.