Trait sqlx::ValueRef

pub trait ValueRef<'r> {
    type Database: Database;
    pub fn to_owned(&self) -> <Self::Database as Database>::Value;
    pub fn type_info(&self) -> Cow<'_, <Self::Database as Database>::TypeInfo>;
    pub fn is_null(&self) -> bool;
}

A reference to a single value from the database.

Associated Types

type Database: Database

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Required methods

pub fn to_owned(&self) -> <Self::Database as Database>::Value

Creates an owned value from this value reference.

This is just a reference increment in PostgreSQL and MySQL and thus is O(1). In SQLite, this is a copy.

pub fn type_info(&self) -> Cow<'_, <Self::Database as Database>::TypeInfo>

Get the type information for this value.

pub fn is_null(&self) -> bool

Returns true if the SQL value is NULL.

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Implementors

impl<'_, '_> ValueRef<'_> for MssqlValueRef<'_>

type Database = Mssql

pub fn to_owned(&self) -> MssqlValue

pub fn type_info(&self) -> Cow<'_, MssqlTypeInfo>

pub fn is_null(&self) -> bool

impl<'r> ValueRef<'r> for AnyValueRef<'r>

type Database = Any

pub fn to_owned(&self) -> AnyValue

pub fn type_info(&self) -> Cow<'_, AnyTypeInfo>

pub fn is_null(&self) -> bool

impl<'r> ValueRef<'r> for MySqlValueRef<'r>

type Database = MySql

pub fn to_owned(&self) -> MySqlValue

pub fn type_info(&self) -> Cow<'_, MySqlTypeInfo>

pub fn is_null(&self) -> bool

impl<'r> ValueRef<'r> for PgValueRef<'r>

type Database = Postgres

pub fn to_owned(&self) -> PgValue

pub fn type_info(&self) -> Cow<'_, PgTypeInfo>

pub fn is_null(&self) -> bool

impl<'r> ValueRef<'r> for SqliteValueRef<'r>

type Database = Sqlite

pub fn to_owned(&self) -> SqliteValue

pub fn type_info(&self) -> Cow<'_, SqliteTypeInfo>

pub fn is_null(&self) -> bool

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