polars_plan::dsl::dt

Struct DateLikeNameSpace

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pub struct DateLikeNameSpace(/* private fields */);
Available on crate feature temporal only.
Expand description

Specialized expressions for Series with dates/datetimes.

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impl DateLikeNameSpace

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pub fn add_business_days( self, n: Expr, week_mask: [bool; 7], holidays: Vec<i32>, roll: Roll, ) -> Expr

Available on crate feature business only.

Add a given number of business days.

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pub fn to_string(self, format: &str) -> Expr

Convert from Date/Time/Datetime into String with the given format. See chrono strftime/strptime.

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pub fn strftime(self, format: &str) -> Expr

Convert from Date/Time/Datetime into String with the given format. See chrono strftime/strptime.

Alias for to_string.

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pub fn cast_time_unit(self, tu: TimeUnit) -> Expr

Change the underlying TimeUnit. And update the data accordingly.

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pub fn with_time_unit(self, tu: TimeUnit) -> Expr

Change the underlying TimeUnit of the Series. This does not modify the data.

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pub fn convert_time_zone(self, time_zone: TimeZone) -> Expr

Available on crate feature timezones only.

Change the underlying TimeZone of the Series. This does not modify the data.

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pub fn millennium(self) -> Expr

Get the millennium of a Date/Datetime

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pub fn century(self) -> Expr

Get the century of a Date/Datetime

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pub fn year(self) -> Expr

Get the year of a Date/Datetime

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pub fn is_leap_year(self) -> Expr

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pub fn iso_year(self) -> Expr

Get the iso-year of a Date/Datetime. This may not correspond with a calendar year.

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pub fn month(self) -> Expr

Get the month of a Date/Datetime.

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pub fn quarter(self) -> Expr

Extract quarter from underlying NaiveDateTime representation. Quarters range from 1 to 4.

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pub fn week(self) -> Expr

Extract the week from the underlying Date representation. Can be performed on Date and Datetime

Returns the ISO week number starting from 1. The return value ranges from 1 to 53. (The last week of year differs by years.)

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pub fn weekday(self) -> Expr

Extract the ISO week day from the underlying Date representation. Can be performed on Date and Datetime.

Returns the weekday number where monday = 1 and sunday = 7

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pub fn day(self) -> Expr

Get the month of a Date/Datetime.

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pub fn ordinal_day(self) -> Expr

Get the ordinal_day of a Date/Datetime.

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pub fn time(self) -> Expr

Get the (local) time of a Date/Datetime/Time.

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pub fn date(self) -> Expr

Get the (local) date of a Date/Datetime.

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pub fn datetime(self) -> Expr

Get the (local) datetime of a Datetime.

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pub fn hour(self) -> Expr

Get the hour of a Datetime/Time64.

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pub fn minute(self) -> Expr

Get the minute of a Datetime/Time64.

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pub fn second(self) -> Expr

Get the second of a Datetime/Time64.

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pub fn millisecond(self) -> Expr

Get the millisecond of a Time64 (scaled from nanosecs).

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pub fn microsecond(self) -> Expr

Get the microsecond of a Time64 (scaled from nanosecs).

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pub fn nanosecond(self) -> Expr

Get the nanosecond part of a Time64.

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pub fn timestamp(self, tu: TimeUnit) -> Expr

Return the timestamp (UNIX epoch) of a Datetime/Date.

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pub fn truncate(self, every: Expr) -> Expr

Truncate the Datetime/Date range into buckets.

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pub fn month_start(self) -> Expr

Available on crate feature month_start only.

Roll backward to the first day of the month.

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pub fn month_end(self) -> Expr

Available on crate feature month_end only.

Roll forward to the last day of the month.

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pub fn base_utc_offset(self) -> Expr

Available on crate feature timezones only.

Get the base offset from UTC.

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pub fn dst_offset(self) -> Expr

Available on crate feature timezones only.

Get the additional offset from UTC currently in effect (usually due to daylight saving time).

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pub fn round(self, every: Expr) -> Expr

Round the Datetime/Date range into buckets.

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pub fn offset_by(self, by: Expr) -> Expr

Available on crate feature offset_by only.

Offset this Date/Datetime by a given offset Duration. This will take leap years/ months into account.

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pub fn replace_time_zone( self, time_zone: Option<TimeZone>, ambiguous: Expr, non_existent: NonExistent, ) -> Expr

Available on crate feature timezones only.
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pub fn combine(self, time: Expr, tu: TimeUnit) -> Expr

Combine an existing Date/Datetime with a Time, creating a new Datetime value.

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pub fn total_days(self) -> Expr

Express a Duration in terms of its total number of integer days.

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pub fn total_hours(self) -> Expr

Express a Duration in terms of its total number of integer hours.

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pub fn total_minutes(self) -> Expr

Express a Duration in terms of its total number of integer minutes.

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pub fn total_seconds(self) -> Expr

Express a Duration in terms of its total number of integer seconds.

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pub fn total_milliseconds(self) -> Expr

Express a Duration in terms of its total number of milliseconds.

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pub fn total_microseconds(self) -> Expr

Express a Duration in terms of its total number of microseconds.

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pub fn total_nanoseconds(self) -> Expr

Express a Duration in terms of its total number of nanoseconds.

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