add back import #20

Job	Run time
cargo test (macos)	10m 5s
build with wasm-pack	2m 38s
cargo check	10m 9s
cargo test (macos-aarch64)	11m 3s
Verify Vendored Code	48s
cargo test (win64)	43m 25s
Check cargo fmt	42s
Verify MSRV (Min Supported Rust Version)	7m 7s
cargo examples (amd64)	13m 36s
clippy	5m 38s
cargo test hash collisions (amd64)	14m 4s
cargo test (amd64)	9m 51s
cargo doc	4m 4s
cargo test datafusion-cli (amd64)	3m 57s
cargo test doc (amd64)	14m 44s
Run sqllogictest with Postgres runner	3m 34s
cargo test pyarrow (amd64)	2m 55s
verify benchmark results (amd64)	11m 51s
check Cargo.toml formatting	2m 56s
check configs.md is up-to-date	2m 45s
	2h 55m 52s

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