Trait diesel::serialize::ToSql

pub trait ToSql<A, DB: Backend>: Debug {
    fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result;
}

Serializes a single value to be sent to the database.

The output is sent as a bind parameter, and the data must be written in the expected format for the given backend.

When possible, implementations of this trait should prefer using an existing implementation, rather than writing to out directly. (For example, if you are implementing this for an enum, which is represented as an integer in the database, you should use i32::to_sql(x, out) instead of writing to out yourself.

Any types which implement this trait should also #[derive(AsExpression)].

Backend specific details

• For PostgreSQL, the bytes will be sent using the binary protocol, not text.
• For SQLite, all implementations should be written in terms of an existing ToSql implementation.
• For MySQL, the expected bytes will depend on the return value of type_metadata for the given SQL type. See MysqlType for details.
• For third party backends, consult that backend's documentation.

Required Methods

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

See the trait documentation.

Implementations on Foreign Types

impl<'a, A, T: ?Sized, DB> ToSql<A, DB> for &'a T where
    DB: Backend,
    T: ToSql<A, DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl ToSql<Datetime, Mysql> for MYSQL_TIME

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Timestamp, Mysql> for MYSQL_TIME

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Time, Mysql> for MYSQL_TIME

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Date, Mysql> for MYSQL_TIME

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Datetime, Mysql> for NaiveDateTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Timestamp, Mysql> for NaiveDateTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Time, Mysql> for NaiveTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Date, Mysql> for NaiveDate

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Numeric, Mysql> for BigDecimal

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Tinyint, Mysql> for i8

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Unsigned<SmallInt>, Mysql> for u16

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Unsigned<Integer>, Mysql> for u32

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Unsigned<BigInt>, Mysql> for u64

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl ToSql<Bool, Mysql> for bool

fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> Result

impl<ST, T> ToSql<Array<ST>, Pg> for [T] where
    Pg: HasSqlType<ST>,
    T: ToSql<ST, Pg>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<ST, T> ToSql<Nullable<Array<ST>>, Pg> for [T] where
    [T]: ToSql<Array<ST>, Pg>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<ST, T> ToSql<Array<ST>, Pg> for Vec<T> where
    [T]: ToSql<Array<ST>, Pg>,
    T: Debug, 

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<ST, T> ToSql<Nullable<Array<ST>>, Pg> for Vec<T> where
    Vec<T>: ToSql<Array<ST>, Pg>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<ST, T> ToSql<Range<ST>, Pg> for (Bound<T>, Bound<T>) where
    T: ToSql<ST, Pg>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<ST, T> ToSql<Nullable<Range<ST>>, Pg> for (Bound<T>, Bound<T>) where
    (Bound<T>, Bound<T>): ToSql<Range<ST>, Pg>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Timestamp, Pg> for SystemTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Timestamp, Pg> for NaiveDateTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Timestamptz, Pg> for NaiveDateTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<TZ: TimeZone> ToSql<Timestamptz, Pg> for DateTime<TZ>

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Time, Pg> for NaiveTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Date, Pg> for NaiveDate

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<__DB> ToSql<Nullable<Timestamp>, __DB> for Timespec where
    __DB: Backend,
    Self: ToSql<Timestamp, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl ToSql<Timestamp, Pg> for Timespec

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<__DB> ToSql<Nullable<MacAddr>, __DB> for [u8; 6] where
    __DB: Backend,
    Self: ToSql<MacAddr, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Inet>, __DB> for IpNetwork where
    __DB: Backend,
    Self: ToSql<Inet, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Cidr>, __DB> for IpNetwork where
    __DB: Backend,
    Self: ToSql<Cidr, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl ToSql<MacAddr, Pg> for [u8; 6]

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Inet, Pg> for IpNetwork

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Cidr, Pg> for IpNetwork

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Oid, Pg> for u32

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Numeric, Pg> for BigDecimal

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Bool, Pg> for bool

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<__DB> ToSql<Nullable<Uuid>, __DB> for Uuid where
    __DB: Backend,
    Self: ToSql<Uuid, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl ToSql<Uuid, Pg> for Uuid

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl<__DB> ToSql<Nullable<Json>, __DB> for Value where
    __DB: Backend,
    Self: ToSql<Json, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Jsonb>, __DB> for Value where
    __DB: Backend,
    Self: ToSql<Jsonb, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl ToSql<Json, Pg> for Value

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Jsonb, Pg> for Value

fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> Result

impl ToSql<Date, Sqlite> for NaiveDate

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Time, Sqlite> for NaiveTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Timestamp, Sqlite> for NaiveDateTime

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Date, Sqlite> for str

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Date, Sqlite> for String

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Time, Sqlite> for str

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Time, Sqlite> for String

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Timestamp, Sqlite> for str

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Timestamp, Sqlite> for String

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl ToSql<Bool, Sqlite> for bool

fn to_sql<W: Write>(&self, out: &mut Output<W, Sqlite>) -> Result

impl<__DB> ToSql<Nullable<Timestamp>, __DB> for SystemTime where
    __DB: Backend,
    Self: ToSql<Timestamp, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Date>, __DB> for NaiveDate where
    __DB: Backend,
    Self: ToSql<Date, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Time>, __DB> for NaiveTime where
    __DB: Backend,
    Self: ToSql<Time, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Timestamp>, __DB> for NaiveDateTime where
    __DB: Backend,
    Self: ToSql<Timestamp, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Timestamptz>, __DB> for NaiveDateTime where
    __DB: Backend,
    Self: ToSql<Timestamptz, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Datetime>, __DB> for NaiveDateTime where
    __DB: Backend,
    Self: ToSql<Datetime, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<Tz: TimeZone, __DB> ToSql<Nullable<Timestamptz>, __DB> for DateTime<Tz> where
    __DB: Backend,
    Self: ToSql<Timestamptz, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<DB: Backend> ToSql<Float, DB> for f32

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB: Backend> ToSql<Double, DB> for f64

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB: Backend> ToSql<SmallInt, DB> for i16

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB: Backend> ToSql<Integer, DB> for i32

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB: Backend> ToSql<BigInt, DB> for i64

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<T, ST, DB> ToSql<Nullable<ST>, DB> for Option<T> where
    T: ToSql<ST, DB>,
    DB: Backend,
    ST: NotNull, 

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<__DB> ToSql<Nullable<Bool>, __DB> for bool where
    __DB: Backend,
    Self: ToSql<Bool, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Tinyint>, __DB> for i8 where
    __DB: Backend,
    Self: ToSql<Tinyint, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<SmallInt>, __DB> for i16 where
    __DB: Backend,
    Self: ToSql<SmallInt, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Integer>, __DB> for i32 where
    __DB: Backend,
    Self: ToSql<Integer, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<BigInt>, __DB> for i64 where
    __DB: Backend,
    Self: ToSql<BigInt, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Unsigned<SmallInt>>, __DB> for u16 where
    __DB: Backend,
    Self: ToSql<Unsigned<SmallInt>, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Unsigned<Integer>>, __DB> for u32 where
    __DB: Backend,
    Self: ToSql<Unsigned<Integer>, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Oid>, __DB> for u32 where
    __DB: Backend,
    Self: ToSql<Oid, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Unsigned<BigInt>>, __DB> for u64 where
    __DB: Backend,
    Self: ToSql<Unsigned<BigInt>, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Float>, __DB> for f32 where
    __DB: Backend,
    Self: ToSql<Float, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Double>, __DB> for f64 where
    __DB: Backend,
    Self: ToSql<Double, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Text>, __DB> for String where
    __DB: Backend,
    Self: ToSql<Text, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Date>, __DB> for String where
    __DB: Backend,
    Self: ToSql<Date, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Time>, __DB> for String where
    __DB: Backend,
    Self: ToSql<Time, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Timestamp>, __DB> for String where
    __DB: Backend,
    Self: ToSql<Timestamp, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Text>, __DB> for str where
    __DB: Backend,
    Self: ToSql<Text, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Date>, __DB> for str where
    __DB: Backend,
    Self: ToSql<Date, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Time>, __DB> for str where
    __DB: Backend,
    Self: ToSql<Time, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Timestamp>, __DB> for str where
    __DB: Backend,
    Self: ToSql<Timestamp, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Binary>, __DB> for Vec<u8> where
    __DB: Backend,
    Self: ToSql<Binary, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<__DB> ToSql<Nullable<Binary>, __DB> for [u8] where
    __DB: Backend,
    Self: ToSql<Binary, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

impl<DB: Backend> ToSql<Text, DB> for str

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB> ToSql<Text, DB> for String where
    DB: Backend,
    str: ToSql<Text, DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB> ToSql<Binary, DB> for Vec<u8> where
    DB: Backend,
    [u8]: ToSql<Binary, DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<DB: Backend> ToSql<Binary, DB> for [u8]

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<'a, T: ?Sized, ST, DB> ToSql<ST, DB> for Cow<'a, T> where
    T: 'a + ToOwned + ToSql<ST, DB>,
    DB: Backend,
    Self: Debug, 

fn to_sql<W: Write>(&self, out: &mut Output<W, DB>) -> Result

impl<__DB> ToSql<Nullable<Numeric>, __DB> for BigDecimal where
    __DB: Backend,
    Self: ToSql<Numeric, __DB>, 

fn to_sql<W: Write>(&self, out: &mut Output<W, __DB>) -> Result

Implementors

• impl<__DB> ToSql<Nullable<Timestamp>, __DB> for PgTimestamp where
    __DB: Backend,
    Self: ToSql<Timestamp, __DB>, 
• impl<__DB> ToSql<Nullable<Timestamptz>, __DB> for PgTimestamp where
    __DB: Backend,
    Self: ToSql<Timestamptz, __DB>, 
• impl<__DB> ToSql<Nullable<Date>, __DB> for PgDate where
    __DB: Backend,
    Self: ToSql<Date, __DB>, 
• impl<__DB> ToSql<Nullable<Time>, __DB> for PgTime where
    __DB: Backend,
    Self: ToSql<Time, __DB>, 
• impl<__DB> ToSql<Nullable<Interval>, __DB> for PgInterval where
    __DB: Backend,
    Self: ToSql<Interval, __DB>, 
• impl ToSql<Timestamp, Pg> for PgTimestamp
• impl ToSql<Timestamptz, Pg> for PgTimestamp
• impl ToSql<Date, Pg> for PgDate
• impl ToSql<Time, Pg> for PgTime
• impl ToSql<Interval, Pg> for PgInterval
• impl<__DB> ToSql<Nullable<Numeric>, __DB> for PgNumeric where
    __DB: Backend,
    Self: ToSql<Numeric, __DB>, 
• impl ToSql<Numeric, Pg> for PgNumeric
• impl<__DB> ToSql<Nullable<Money>, __DB> for PgMoney where
    __DB: Backend,
    Self: ToSql<Money, __DB>, 
• impl ToSql<Money, Pg> for PgMoney