Trait GatekeepSqlxBackend 

pub trait GatekeepSqlxBackend:
    Clone
    + Copy
    + Debug
    + Send
    + Sync
    + 'static {
    type Database: Database;

    const DRIVER: SqlxDriver;
    const NAME: &'static str;
    const MIN_FUNCTION: &'static str;
    const MAX_FUNCTION: &'static str;
    const GRADE_FUNCTION_PROPAGATES_NULL: bool;

    // Required methods
    fn push_placeholder(sql: &mut String, index: usize);
    fn push_bind(builder: &mut QueryBuilder<Self::Database>, value: &SqlxValue);
}

SQLx backend supported by gatekeep lowering.

Required Associated Constants

const DRIVER: SqlxDriver

Database driver represented by this backend.

const NAME: &'static str

Stable backend name.

const MIN_FUNCTION: &'static str

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

const MAX_FUNCTION: &'static str

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

const GRADE_FUNCTION_PROPAGATES_NULL: bool

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

Required Associated Types

type Database: Database

SQLx database driver for this backend.

Required Methods

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.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl GatekeepSqlxBackend for PostgresBackend

Available on crate feature postgres only.

const DRIVER: SqlxDriver = SqlxDriver::Postgres

const NAME: &'static str = "postgres"

const MIN_FUNCTION: &'static str = "LEAST"

const MAX_FUNCTION: &'static str = "GREATEST"

const GRADE_FUNCTION_PROPAGATES_NULL: bool = false

type Database = Postgres