Enum CastKind 

pub enum CastKind {
    Cast,
    TryCast,
    SafeCast,
    DoubleColon,
}

The syntax used for in a cast expression.

Variants

Cast

The standard SQL cast syntax, e.g. CAST(<expr> as <datatype>)

TryCast

A cast that returns NULL on failure, e.g. TRY_CAST(<expr> as <datatype>).

See https://docs.snowflake.com/en/sql-reference/functions/try_cast. See https://learn.microsoft.com/en-us/sql/t-sql/functions/try-cast-transact-sql.

SafeCast

A cast that returns NULL on failure, bigQuery-specific , e.g. SAFE_CAST(<expr> as <datatype>).

See https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#safe_casting.

DoubleColon

<expr> :: <datatype>

Trait Implementations

impl Clone for CastKind

fn clone(&self) -> CastKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CastKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Hash for CastKind

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CastKind

fn cmp(&self, other: &CastKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for CastKind

fn eq(&self, other: &CastKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for CastKind

fn partial_cmp(&self, other: &CastKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for CastKind

impl StructuralPartialEq for CastKind