Rust

fix: parse on proper delimiter, and improve tests #43

Job	Run time
cargo test (macos-aarch64)	10m 11s
cargo check	3m 39s
cargo test (macos)	10m 16s
build with wasm-pack	2m 13s
Verify Vendored Code	56s
cargo test (win64)	42m 0s
Check cargo fmt	44s
Verify MSRV (Min Supported Rust Version)	6m 49s
cargo test datafusion-cli (amd64)	3m 30s
cargo test (amd64)	9m 27s
circular dependency check	2m 36s
check Cargo.toml formatting	3m 8s
clippy	5m 0s
cargo test hash collisions (amd64)	8m 36s
cargo doc	3m 33s
cargo test doc (amd64)	11m 2s
cargo examples (amd64)	10m 49s
Run sqllogictest with Postgres runner	3m 11s
cargo test pyarrow (amd64)	2m 28s
verify benchmark results (amd64)	10m 29s
check configs.md is up-to-date	2m 37s
	2h 33m 14s

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