SubstringBeforeFunction

sql_cli::sql::functions::string_methods

Struct SubstringBeforeFunction

pub struct SubstringBeforeFunction;

Expand description

SUBSTRING_BEFORE - returns substring before first/nth occurrence of delimiter

Trait Implementations§

impl SqlFunction for SubstringBeforeFunction

fn signature(&self) -> FunctionSignature

Get the function’s signature and metadata

fn evaluate(&self, args: &[DataValue]) -> Result<DataValue>

Evaluate the function with the given arguments

fn validate_args(&self, args: &[DataValue]) -> Result<()>

Validate arguments before evaluation (default implementation checks count)

Auto Trait Implementations§

impl Freeze for SubstringBeforeFunction

impl RefUnwindSafe for SubstringBeforeFunction

impl Send for SubstringBeforeFunction

impl Sync for SubstringBeforeFunction

impl Unpin for SubstringBeforeFunction

impl UnwindSafe for SubstringBeforeFunction

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

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where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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fn from(t: T) -> T

Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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type Output = T

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where U: Into<T>,

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Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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impl<V, T> VZip<V> for T
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