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

• BigInt
  The big integer SQL type.
• Binary
  The binary SQL type.
• Bool
  The boolean SQL type.
• Date
  The date SQL type.
• Double
  The double precision float SQL type.
• Float
  The float SQL type.
• 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"
• Nullable
  The nullable SQL type.
• Numeric
  The arbitrary precision numeric SQL type.
• SmallInt
  The small integer SQL type.
• Text
  The text SQL type.
• Time
  The time SQL type.
• Timestamp
  The timestamp SQL type.
• TimestamptzSqlite
  The SQLite timestamp with time zone type
• TinyInt
  The tiny integer SQL type.
• Untyped
  Query nodes with this expression type do not have a statically at compile time known expression type.

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 Aliases

• Decimal
  Alias for Numeric
• 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