Trait StaticType 

pub trait StaticType {
    const OID: Oid;
    const NULLABLE: bool = false;
}

A value with a statically known PostgreSQL type OID.

Used by the query! / query_as! macros to check parameter types at compile time. This trait is deliberately separate from ToSql because an associated constant would make ToSql not object-safe.

Required Associated Constants

const OID: Oid

The PostgreSQL type OID of this Rust type.

Provided Associated Constants

const NULLABLE: bool = false

Whether this Rust type can represent SQL NULL (i.e. it is Option).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl StaticType for DateTime

const OID: Oid = TIMESTAMPTZOID

impl StaticType for IpNetwork

const OID: Oid = INETOID

impl StaticType for String

const OID: Oid = TEXTOID

impl StaticType for Uuid

const OID: Oid = UUIDOID

impl StaticType for Value

const OID: Oid = JSONBOID

impl StaticType for Vec<u8>

const OID: Oid = BYTEAOID

impl StaticType for [u8]

const OID: Oid = BYTEAOID

impl StaticType for bool

const OID: Oid = BOOLOID

impl StaticType for f32

const OID: Oid = FLOAT4OID

impl StaticType for f64

const OID: Oid = FLOAT8OID

impl StaticType for i16

const OID: Oid = INT2OID

impl StaticType for i32

const OID: Oid = INT4OID

impl StaticType for i64

const OID: Oid = INT8OID

impl StaticType for str

const OID: Oid = TEXTOID

impl<T: StaticType + ?Sized> StaticType for &T

const OID: Oid = T::OID

const NULLABLE: bool = T::NULLABLE

impl<T: StaticType> StaticType for Option<T>

const OID: Oid = T::OID

const NULLABLE: bool = true

impl<T: StaticType> StaticType for Vec<T>

const OID: Oid

impl<T: StaticType> StaticType for [T]

const OID: Oid

Implementors

impl StaticType for Date

const OID: Oid = DATEOID

impl StaticType for Interval

const OID: Oid = INTERVALOID

impl StaticType for Timestamp

const OID: Oid = TIMESTAMPOID

impl<I, T> StaticType for Array<I>

where I: Iterator<Item = T> + Send, T: ToSql + StaticType,

const OID: Oid

impl<T> StaticType for Json<T>

const OID: Oid = JSONBOID