Trait ToSqlNull

pub trait ToSqlNull {
    // Required method
    fn oratype_for_null(conn: &Connection) -> Result<OracleType>;
}

A trait specifying Oracle type to bind a null value.

This trait is used only when binding a None value of Option<T>. The type of the null value is determined by the rust type.

Rust Type	Oracle Type
str, String	nvarchar2(0)
i8, i16, i32, i64, u8, u16, u32, u64, f32, f64	number
Vec<u8>	raw(0)
bool	boolean (PL/SQL only)
Timestamp	timestamp(9) with time zone
IntervalDS	interval day(9) to second(9)
IntervalYM	interval year(9) to month
RefCursor	ref cursor
VecRef	vector

When chrono feature is enabled, the followings are added.

Rust Type	Oracle Type
chrono::Date	timestamp(0) with time zone
chrono::DateTime	timestamp(9) with time zone
chrono::naive::NaiveDate	timestamp(0)
chrono::naive::NaiveDateTime	timestamp(9)
chrono::Duration, which is alias of chrono::TimeDelta since chrono 0.4.43 ]	interval day(9) to second(9)

Required Methods

fn oratype_for_null(conn: &Connection) -> Result<OracleType>

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.

Implementations on Foreign Types

impl ToSqlNull for &str

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for &[u8]

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for bool

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for f32

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for f64

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for i8

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for i16

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for i32

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for i64

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for isize

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for u8

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for u16

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for u32

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for u64

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for usize

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for String

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for Vec<u8>

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for NaiveDate

Available on crate feature chrono only.

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for NaiveDateTime

Available on crate feature chrono only.

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl ToSqlNull for Duration

Available on crate feature chrono only.

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl<Tz> ToSqlNull for Date<Tz>

where Tz: TimeZone,

Available on crate feature chrono only.

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

impl<Tz> ToSqlNull for DateTime<Tz>

where Tz: TimeZone,

Available on crate feature chrono only.

fn oratype_for_null(_conn: &Connection) -> Result<OracleType>

Implementors

impl ToSqlNull for VecRef<'_>

impl ToSqlNull for Blob

impl ToSqlNull for Clob

impl ToSqlNull for IntervalDS

impl ToSqlNull for IntervalYM

impl ToSqlNull for Nclob

impl ToSqlNull for RefCursor

impl ToSqlNull for Timestamp