Struct PostgresBackend 

pub struct PostgresBackend;

Postgres backend marker.

Trait Implementations

impl Clone for PostgresBackend

fn clone(&self) -> PostgresBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PostgresBackend

impl Debug for PostgresBackend

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

Formats the value using the given formatter.

impl GatekeepSqlxBackend for PostgresBackend

Available on crate feature postgres only.

const DRIVER: SqlxDriver = SqlxDriver::Postgres

Database driver represented by this backend.

const NAME: &'static str = "postgres"

Stable backend name.

const MIN_FUNCTION: &'static str = "LEAST"

Name of the SQL function that returns the lower of two non-null grades.

const MAX_FUNCTION: &'static str = "GREATEST"

Name of the SQL function that returns the higher of two non-null grades.

const GRADE_FUNCTION_PROPAGATES_NULL: bool = false

Whether the backend’s grade functions return NULL when any input is NULL.

type Database = Postgres

SQLx database driver for this backend.

fn push_placeholder(sql: &mut String, index: usize)

Appends one bind placeholder to rendered SQL.

fn push_bind(builder: &mut QueryBuilder<Self::Database>, value: &SqlxValue)

Appends one typed bind value to a SQLx query builder.

impl<T> SqlxFactPredicates<PostgresBackend> for T

where T: PgFactPredicates,

Available on crate feature postgres only.

fn predicate( &self, fact: &FactId, cx: &Context, ) -> Option<SqlxFragment<PostgresBackend>>

Returns a predicate for the given fact, or None when the fact cannot be represented by this backend.