datafusion-7.0.0-alpha
- datafusion 7.0.0-alpha
- Docs.rs crate page
- Apache-2.0
- Links
- Homepage
- Repository
- crates.io
- Source
- Owners
- andygrove
- kou
- kszucs
- nevi-me
- alamb
- Dependencies
- ahash ^0.7 normal
  arrow ^8.0.0 normal
  async-trait ^0.1.41 normal
  avro-rs ^0.13 normal
  blake2 ^0.10.2 normal
  blake3 ^1.0 normal
  chrono ^0.4 normal
  datafusion-common ^7.0.0-alpha normal
  datafusion-expr ^7.0.0-alpha normal
  futures ^0.3 normal
  hashbrown ^0.12 normal
  lazy_static ^1.4.0 normal
  log ^0.4 normal
  md-5 ^0.10.0 normal
  num-traits ^0.2 normal
  num_cpus ^1.13.0 normal
  ordered-float ^2.10 normal
  parking_lot ^0.12 normal
  parquet ^8.0.0 normal
  paste ^1.0 normal
  pin-project-lite ^0.2.7 normal
  pyo3 ^0.15 normal
  rand ^0.8 normal
  regex ^1.4.3 normal
  sha2 ^0.10.1 normal
  smallvec ^1.6 normal
  sqlparser ^0.14 normal
  tempfile ^3 normal
  tokio ^1.0 normal
  tokio-stream ^0.1 normal
  unicode-segmentation ^1.7.1 normal
  criterion ^0.3 dev
  doc-comment ^0.3 dev
- Versions
- 100% of the crate is documented
Go to latest stable release
Platform
- i686-unknown-linux-gnu
- x86_64-unknown-linux-gnu
Feature flags

Rust

In datafusion::logical_plan

Function datafusion::logical_plan::count

source · [−]

pub fn count(expr: Expr) -> Expr

Expand description

Create an expression to represent the count() aggregate function