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datafusion::functions::count::CountFunction - Rust

Struct datafusion::functions::count::CountFunction[−][src]

pub struct CountFunction { /* fields omitted */ }

Methods

`impl CountFunction`
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`pub fn new() -> Self`
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Trait Implementations

`impl AggregateFunction for CountFunction`
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`fn name(&self) -> String`
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ⓘImportant traits for Vec<u8>
Important traits for Vec<u8>
`impl Write for Vec<u8>`
`fn args(&self) -> Vec<Field>`
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`fn return_type(&self) -> DataType`
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`fn execute(&mut self, args: &[Value]) -> Result<()>`
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`fn finish(&self) -> Result<Value>`
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Auto Trait Implementations

`impl Send for CountFunction`

`impl Sync for CountFunction`