Trait IntervalDsl

pub trait IntervalDsl:
    Sized
    + From<i32>
    + Mul<Self, Output = Self> {
    // Required methods
    fn microseconds(self) -> PgInterval;
    fn days(self) -> PgInterval;
    fn months(self) -> PgInterval;

    // Provided methods
    fn milliseconds(self) -> PgInterval { ... }
    fn seconds(self) -> PgInterval { ... }
    fn minutes(self) -> PgInterval { ... }
    fn hours(self) -> PgInterval { ... }
    fn weeks(self) -> PgInterval { ... }
    fn years(self) -> PgInterval { ... }
    fn microsecond(self) -> PgInterval { ... }
    fn millisecond(self) -> PgInterval { ... }
    fn second(self) -> PgInterval { ... }
    fn minute(self) -> PgInterval { ... }
    fn hour(self) -> PgInterval { ... }
    fn day(self) -> PgInterval { ... }
    fn week(self) -> PgInterval { ... }
    fn month(self) -> PgInterval { ... }
    fn year(self) -> PgInterval { ... }
}

A DSL added to integers and f64 to construct PostgreSQL intervals.

The behavior of these methods when called on NAN or Infinity, or when overflow occurs is unspecified.

Examples

connection.execute("INSERT INTO users (name, created_at) VALUES
    ('Sean', NOW()), ('Tess', NOW() - '5 minutes'::interval),
    ('Jim', NOW() - '10 minutes'::interval)").unwrap();

let mut data: Vec<String> = users
    .select(name)
    .filter(created_at.gt(now - 7.minutes()))
    .load(&connection).unwrap();
assert_eq!(2, data.len());
assert_eq!("Sean".to_string(), data[0]);
assert_eq!("Tess".to_string(), data[1]);

connection.execute("INSERT INTO users (name, created_at) VALUES
    ('Sean', NOW()), ('Tess', NOW() - '5 days'::interval),
    ('Jim', NOW() - '10 days'::interval)").unwrap();

let mut data: Vec<String> = users
    .select(name)
    .filter(created_at.gt(now - 7.days()))
    .load(&connection).unwrap();
assert_eq!(2, data.len());
assert_eq!("Sean".to_string(), data[0]);
assert_eq!("Tess".to_string(), data[1]);

Required Methods

fn microseconds(self) -> PgInterval

Returns a PgInterval representing self as microseconds

fn days(self) -> PgInterval

Returns a PgInterval representing self in days

fn months(self) -> PgInterval

Returns a PgInterval representing self in months

Provided Methods

fn milliseconds(self) -> PgInterval

Returns a PgInterval representing self as milliseconds

fn seconds(self) -> PgInterval

Returns a PgInterval representing self as seconds

fn minutes(self) -> PgInterval

Returns a PgInterval representing self as minutes

fn hours(self) -> PgInterval

Returns a PgInterval representing self as hours

fn weeks(self) -> PgInterval

Returns a PgInterval representing self in weeks

Note: When called on a high precision float, the returned interval may be 1 microsecond different than the equivalent string passed to PostgreSQL.

fn years(self) -> PgInterval

Returns a PgInterval representing self in weeks

Note: When called on a float, this method will mimic the behavior of PostgreSQL’s interval parsing, and will ignore units smaller than months.

assert_eq!(1.08.years(), 1.year());
assert_eq!(1.09.years(), 1.year() + 1.month());

fn microsecond(self) -> PgInterval

Identical to microseconds

fn millisecond(self) -> PgInterval

Identical to milliseconds

fn second(self) -> PgInterval

Identical to seconds

fn minute(self) -> PgInterval

Identical to minutes

fn hour(self) -> PgInterval

Identical to hours

fn day(self) -> PgInterval

Identical to days

fn week(self) -> PgInterval

Identical to weeks

fn month(self) -> PgInterval

Identical to months

fn year(self) -> PgInterval

Identical to years

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl IntervalDsl for f64

fn microseconds(self) -> PgInterval

fn days(self) -> PgInterval

fn months(self) -> PgInterval

fn years(self) -> PgInterval

impl IntervalDsl for i32

fn microseconds(self) -> PgInterval

fn days(self) -> PgInterval

fn months(self) -> PgInterval

fn milliseconds(self) -> PgInterval

fn seconds(self) -> PgInterval

fn minutes(self) -> PgInterval

fn hours(self) -> PgInterval

impl IntervalDsl for i64

fn microseconds(self) -> PgInterval

fn days(self) -> PgInterval

fn months(self) -> PgInterval

Implementors