Trait sqlx::Value

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

    pub fn decode<'r, T>(&'r self) -> T
    where
        T: Decode<'r, Self::Database> + Type<Self::Database>,
    { ... }
    pub fn decode_unchecked<'r, T>(&'r self) -> T
    where
        T: Decode<'r, Self::Database>,
    { ... }
    pub fn try_decode<'r, T>(&'r self) -> Result<T, Error>
    where
        T: Decode<'r, Self::Database> + Type<Self::Database>,
    { ... }
    pub fn try_decode_unchecked<'r, T>(&'r self) -> Result<T, Error>
    where
        T: Decode<'r, Self::Database>,
    { ... }
}

An owned value from the database.

Associated Types

type Database: Database

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Required methods

pub fn as_ref(&self) -> <Self::Database as HasValueRef<'_>>::ValueRef

Get this value as a reference.

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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Provided methods

pub fn decode<'r, T>(&'r self) -> T where
    T: Decode<'r, Self::Database> + Type<Self::Database>, 

Decode this single value into the requested type.

Panics

Panics if the value cannot be decoded into the requested type. See try_decode for a non-panicking version.

pub fn decode_unchecked<'r, T>(&'r self) -> T where
    T: Decode<'r, Self::Database>, 

Decode this single value into the requested type.

Unlike decode, this method does not check that the type of this value is compatible with the Rust type and blindly tries to decode the value.

Panics

Panics if the value cannot be decoded into the requested type. See try_decode_unchecked for a non-panicking version.

pub fn try_decode<'r, T>(&'r self) -> Result<T, Error> where
    T: Decode<'r, Self::Database> + Type<Self::Database>, 

Decode this single value into the requested type.

Errors

• Decode if the value could not be decoded into the requested type.

pub fn try_decode_unchecked<'r, T>(&'r self) -> Result<T, Error> where
    T: Decode<'r, Self::Database>, 

Decode this single value into the requested type.

Unlike try_decode, this method does not check that the type of this value is compatible with the Rust type and blindly tries to decode the value.

Errors

• Decode if the value could not be decoded into the requested type.

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Implementors

impl Value for AnyValue

type Database = Any

pub fn as_ref(
    &self
) -> <<AnyValue as Value>::Database as HasValueRef<'_>>::ValueRef

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

pub fn is_null(&self) -> bool

impl Value for MssqlValue

type Database = Mssql

pub fn as_ref(&self) -> MssqlValueRef<'_>

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

pub fn is_null(&self) -> bool

impl Value for MySqlValue

type Database = MySql

pub fn as_ref(&self) -> MySqlValueRef<'_>

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

pub fn is_null(&self) -> bool

impl Value for PgValue

type Database = Postgres

pub fn as_ref(&self) -> PgValueRef<'_>

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

pub fn is_null(&self) -> bool

impl Value for SqliteValue

type Database = Sqlite

pub fn as_ref(&self) -> SqliteValueRef<'_>

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

pub fn is_null(&self) -> bool

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