Trait QueryExactOne

pub trait QueryExactOne {
    type ResultRow: PgResultRow;
    type SqlIdType;

    const SQL_ID: Self::SqlIdType;
    const SQL_TEXT: &'static str;
    const PARAM_NAMES: NamesList;
    const TYPE_CHECKS: ReqTypeChecks;

    // Required method
    fn params(&self) -> impl ExactSizeIterator<Item = impl BorrowToSql>;
}

Trait for queries with = type prefix: =RetType.

pg_sql! {
    impl ... for =RetType {
        //
    }
}

Required Associated Constants

const SQL_ID: Self::SqlIdType

const SQL_TEXT: &'static str

const PARAM_NAMES: NamesList

const TYPE_CHECKS: ReqTypeChecks

Required Associated Types

type ResultRow: PgResultRow

type SqlIdType

Required Methods

fn params(&self) -> impl ExactSizeIterator<Item = impl BorrowToSql>

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.

Implementors