support null for get field (#10665) #27

Job	Run time
Check cargo fmt	48s
cargo check	7m 51s
build with wasm-pack	2m 26s
cargo test (macos)	8m 23s
cargo test (macos-aarch64)	9m 57s
Verify MSRV (Min Supported Rust Version)	6m 38s
Verify Vendored Code	42s
cargo test (win64)	33m 38s
cargo test datafusion-cli (amd64)	3m 43s
cargo doc	3m 11s
cargo test doc (amd64)	11m 56s
cargo test (amd64)	8m 58s
clippy	4m 57s
cargo examples (amd64)	11m 4s
Run sqllogictest with Postgres runner	3m 13s
cargo test pyarrow (amd64)	2m 36s
verify benchmark results (amd64)	10m 43s
check Cargo.toml formatting	2m 42s
check configs.md is up-to-date	2m 30s
cargo test hash collisions (amd64)	8m 37s
	2h 24m 33s

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