pub enum Interval {
Month(i32),
Microsecond(i64),
}Expand description
Represents a time interval, which can be either in months or microseconds.
The Interval type is divided into two variants: Interval::Month and Interval::Microsecond.
This distinction is made because the conversion between months and days is not consistent.
While a year can be clearly calculated as 12 months in the solar calendar,
a month can vary in the number of days (28, 30, or 31 days).
To ensure precise calculations and comparisons, intervals are represented in the smallest
unambiguous units: Month for month-based intervals and Microsecond for microsecond-based intervals.
Comparisons are only allowed within the same unit type to avoid ambiguity.
For more details on how comparisons are implemented, refer to the Interval::partial_cmp trait.
Variants§
Implementations§
Source§impl Interval
impl Interval
pub fn unary_minus(&self) -> Interval
pub fn add(&self, other: &Interval) -> Result<Interval, Error>
pub fn subtract(&self, other: &Interval) -> Result<Interval, Error>
pub fn add_date(&self, date: &NaiveDate) -> Result<NaiveDateTime, Error>
pub fn subtract_from_date( &self, date: &NaiveDate, ) -> Result<NaiveDateTime, Error>
pub fn add_timestamp( &self, timestamp: &NaiveDateTime, ) -> Result<NaiveDateTime, Error>
pub fn subtract_from_timestamp( &self, timestamp: &NaiveDateTime, ) -> Result<NaiveDateTime, Error>
pub fn add_time(&self, time: &NaiveTime) -> Result<NaiveTime, Error>
pub fn subtract_from_time(&self, time: &NaiveTime) -> Result<NaiveTime, Error>
pub fn years(years: i32) -> Interval
pub fn months(months: i32) -> Interval
pub fn extract(&self, field: &DateTimeField) -> Result<Value, Error>
pub fn days(days: i32) -> Interval
pub fn hours(hours: i32) -> Interval
pub fn minutes(minutes: i32) -> Interval
pub fn seconds(seconds: i64) -> Interval
pub fn milliseconds(milliseconds: i64) -> Interval
pub fn microseconds(microseconds: i64) -> Interval
pub fn try_from_str( value: &str, leading_field: Option<DateTimeField>, last_field: Option<DateTimeField>, ) -> Result<Interval, Error>
Trait Implementations§
Source§impl<'de> Deserialize<'de> for Interval
impl<'de> Deserialize<'de> for Interval
Source§fn deserialize<__D>(
__deserializer: __D,
) -> Result<Interval, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<Interval, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Source§impl IntoParamLiteral for Interval
impl IntoParamLiteral for Interval
Source§fn into_param_literal(self) -> ParamLiteral
fn into_param_literal(self) -> ParamLiteral
Converts the value into a
ParamLiteral so it can be bound as a query parameter.Source§impl PartialOrd for Interval
impl PartialOrd for Interval
Source§impl Serialize for Interval
impl Serialize for Interval
Source§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
Serialize this value into the given Serde serializer. Read more
impl Copy for Interval
impl Eq for Interval
impl StructuralPartialEq for Interval
Auto Trait Implementations§
impl Freeze for Interval
impl RefUnwindSafe for Interval
impl Send for Interval
impl Sync for Interval
impl Unpin for Interval
impl UnwindSafe for Interval
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Compare self to
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