Module diesel::sql_types

Types which represent a SQL data type.

The structs in this module are only used as markers to represent a SQL type. They should never be used in your structs. If you’d like to know the rust types which can be used for a given SQL type, see the documentation for that SQL type. Additional types may be provided by other crates.

To see which SQL type can be used with a given Rust type, see the “Implementors” section of FromSql.

Any backend specific types are re-exported through this module

Modules

is_nullable

Possible values for SqlType::IsNullable

ops

Represents the output of numeric operators in SQL

Structs

Arraypostgres_backend

The Array SQL type.

BigInt

The big integer SQL type.

Binary

The binary SQL type.

Bool

The boolean SQL type.

Cidrpostgres_backend

The CIDR SQL type. This type can only be used with feature = "network-address" or feature = "ipnet-address".

Date

The date SQL type.

Datetimemysql_backend

Represents the MySQL datetime type.

Double

The double precision float SQL type.

Float

The float SQL type.

Inetpostgres_backend

The INET SQL type. This type can only be used with feature = "network-address" or feature = "ipnet-address".

Integer

The integer SQL type.

Interval

The interval SQL type.

Json

The JSON SQL type. This type can only be used with feature = "serde_json"

Jsonbpostgres_backend

The jsonb SQL type. This type can only be used with feature = "serde_json"

MacAddrpostgres_backend

The MACADDR SQL type.

Moneypostgres_backend

The PostgreSQL Money type.

Nullable

The nullable SQL type.

Numeric

The arbitrary precision numeric SQL type.

Oidpostgres_backend

The OID SQL type. This is a PostgreSQL specific type.

Rangepostgres_backend

The Range SQL type.

Recordpostgres_backend

The Record (a.k.a. tuple) SQL type.

SmallInt

The small integer SQL type.

Text

The text SQL type.

Time

The time SQL type.

Timestamp

The timestamp SQL type.

Timestamptzpostgres_backend

The “timestamp with time zone” SQL type, which PostgreSQL abbreviates to timestamptz.

TimestamptzSqlitesqlite

The SQLite timestamp with time zone type

TinyInt

The tiny integer SQL type.

Unsignedmysql_backend

Represents the MySQL unsigned type.

Untyped

Query nodes with this expression type do not have a statically at compile time known expression type.

Uuidpostgres_backend

The UUID SQL type. This type can only be used with feature = "uuid"

Traits

AllAreNullable

Are both values of IsNull are nullable?

BoolOrNullableBool

A marker trait for accepting expressions of the type Bool and Nullable<Bool> in the same place

Foldable

Represents SQL types which can be used with SUM and AVG

HasSqlType

Indicates that a SQL type exists for a backend.

IntoNotNullable

Converts a type which may or may not be nullable into its not nullable representation.

IntoNullable

Converts a type which may or may not be nullable into its nullable representation.

MaybeNullableType

A type level constructor for maybe nullable types

OneIsNullable

Is one value of IsNull nullable?

SingleValue

A marker trait indicating that a SQL type represents a single value, as opposed to a list of values.

SqlOrd

Marker trait for types which can be used with MAX and MIN

SqlType

A marker trait for SQL types

TypeMetadata

Information about how a backend stores metadata about given SQL types

Type Definitions

BigSerialpostgres_backend

Alias for BigInt

Decimal

Alias for Numeric

Serialpostgres_backend

Alias for Integer

SmallSerialpostgres_backend

Alias for SmallInt

VarChar

The SQL VARCHAR type

Derive Macros

DieselNumericOps

Implement numeric operators for the current query node

SqlType

Implement necessary traits for adding a new sql type