Enum SpecialFunctionKeyword 

pub enum SpecialFunctionKeyword {
    CurrentCatalog,
    CurrentDate,
    CurrentRole,
    CurrentSchema,
    CurrentTime,
    CurrentTimestamp,
    CurrentUser,
    LocalTime,
    LocalTimestamp,
    SessionUser,
    SystemUser,
    User,
    UtcDate,
    UtcTime,
    UtcTimestamp,
}

A SQL special value function keyword (PostgreSQL SQLValueFunction).

Each names a dedicated grammar production whose whole spelling is the keyword; the four temporal forms additionally accept a parenthesized precision, carried on Expr::SpecialFunction rather than here so the keyword stays a copy tag.

Variants

CurrentCatalog

CURRENT_CATALOG — the current database/catalog name.

CurrentDate

CURRENT_DATE — the current date.

CurrentRole

CURRENT_ROLE — the current role name.

CurrentSchema

CURRENT_SCHEMA — the current schema name.

CurrentTime

CURRENT_TIME — the current time of day (optional precision).

CurrentTimestamp

CURRENT_TIMESTAMP — the current date and time (optional precision).

CurrentUser

CURRENT_USER — the current authorization identifier.

LocalTime

LOCALTIME — the current local time of day (optional precision).

LocalTimestamp

LOCALTIMESTAMP — the current local date and time (optional precision).

SessionUser

SESSION_USER — the session authorization identifier.

SystemUser

SYSTEM_USER — the operating-system-level user identifier.

User

USER — synonym for CURRENT_USER.

UtcDate

MySQL UTC_DATE — the UTC-clock analogue of CURRENT_DATE. Nullary.

UtcTime

MySQL UTC_TIME — the UTC-clock analogue of CURRENT_TIME; takes an optional fractional-seconds precision (UTC_TIME(6)).

UtcTimestamp

MySQL UTC_TIMESTAMP — the UTC-clock analogue of CURRENT_TIMESTAMP; takes an optional fractional-seconds precision (UTC_TIMESTAMP(6)).

Trait Implementations

impl Clone for SpecialFunctionKeyword

fn clone(&self) -> SpecialFunctionKeyword

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SpecialFunctionKeyword

impl Debug for SpecialFunctionKeyword

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SpecialFunctionKeyword

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SpecialFunctionKeyword

impl Hash for SpecialFunctionKeyword

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

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 PartialEq for SpecialFunctionKeyword

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SpecialFunctionKeyword

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SpecialFunctionKeyword