Enum datafusion_sql::unparser::dialect::DateFieldExtractStyle

pub enum DateFieldExtractStyle {
    DatePart,
    Extract,
}

Datetime subfield extraction style for unparsing

<https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT> Different DBMSs follow different standards; popular ones are: date_part(‘YEAR’, date ‘2001-02-16’) EXTRACT(YEAR from date ‘2001-02-16’) Some DBMSs, like Postgres, support both, whereas others like MySQL require EXTRACT.

Variants

DatePart

Extract

Trait Implementations

impl Clone for DateFieldExtractStyle

fn clone(&self) -> DateFieldExtractStyle

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq for DateFieldExtractStyle

fn eq(&self, other: &DateFieldExtractStyle) -> 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 Copy for DateFieldExtractStyle

impl StructuralPartialEq for DateFieldExtractStyle