avoid code duplication #55

Job	Run time
cargo test (macos)	10m 56s
build with wasm-pack	2m 38s
Check cargo fmt	36s
cargo check	6m 30s
cargo test (macos-aarch64)	10m 18s
Verify MSRV (Min Supported Rust Version)	7m 25s
Verify Vendored Code	52s
cargo test (win64)	55m 47s
cargo doc	2m 24s
cargo test doc (amd64)	15m 41s
cargo test datafusion-cli (amd64)	4m 2s
cargo test (amd64)	10m 16s
cargo examples (amd64)	13m 37s
verify benchmark results (amd64)	12m 52s
check Cargo.toml formatting	3m 2s
clippy	5m 41s
cargo test hash collisions (amd64)	15m 14s
Run sqllogictest with Postgres runner	3m 41s
cargo test pyarrow (amd64)	2m 55s
check configs.md is up-to-date	3m 1s
	3h 7m 28s

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