Struct diesel::sql_types::Bool

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pub struct Bool;
Expand description

The boolean SQL type.

On backends without a native boolean type, this is emulated with the smallest supported integer.

ToSql impls

FromSql impls

Trait Implementations§

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impl<'expr> AsExpression<Bool> for &'expr bool

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type Expression = Bound<Bool, &'expr bool>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'expr2, 'expr> AsExpression<Bool> for &'expr2 &'expr bool

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type Expression = Bound<Bool, &'expr2 &'expr bool>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl AsExpression<Bool> for bool

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type Expression = Bound<Bool, bool>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl Clone for Bool

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fn clone(&self) -> Bool

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Bool

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for Bool

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fn default() -> Bool

Returns the “default value” for a type. Read more
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impl FromSql<Bool, Mysql> for bool

Available on crate feature mysql_backend only.
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fn from_sql(bytes: MysqlValue<'_>) -> Result<Self>

See the trait documentation.
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fn from_nullable_sql(bytes: Option<RawValue<'_, DB>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
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impl FromSql<Bool, Pg> for bool

Available on crate feature postgres_backend only.
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fn from_sql(bytes: PgValue<'_>) -> Result<Self>

See the trait documentation.
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fn from_nullable_sql(bytes: Option<RawValue<'_, DB>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
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impl FromSql<Bool, Sqlite> for bool

Available on crate feature sqlite only.
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fn from_sql(value: SqliteValue<'_, '_, '_>) -> Result<Self>

See the trait documentation.
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fn from_nullable_sql(bytes: Option<RawValue<'_, DB>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
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impl HasSqlType<Bool> for Mysql

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fn metadata(_: &mut ()) -> MysqlType

Fetch the metadata for the given type Read more
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impl HasSqlType<Bool> for Pg

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fn metadata(_: &mut Self::MetadataLookup) -> PgTypeMetadata

Fetch the metadata for the given type Read more
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impl HasSqlType<Bool> for Sqlite

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fn metadata(_: &mut ()) -> SqliteType

Fetch the metadata for the given type Read more
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impl QueryId for Bool

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type QueryId = Bool

A type which uniquely represents Self in a SQL query. Read more
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const HAS_STATIC_QUERY_ID: bool = true

Can the SQL generated by Self be uniquely identified by its type? Read more
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fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more
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impl SqlType for Bool

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type IsNull = NotNull

Is this type nullable? Read more
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impl ToSql<Bool, Mysql> for bool

Available on crate feature mysql_backend only.
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fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Mysql>) -> Result

See the trait documentation.
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impl ToSql<Bool, Pg> for bool

Available on crate feature postgres_backend only.
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fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Pg>) -> Result

See the trait documentation.
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impl ToSql<Bool, Sqlite> for bool

Available on crate feature sqlite only.
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fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Sqlite>) -> Result

See the trait documentation.
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impl BoolOrNullableBool for Bool

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impl Copy for Bool

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impl SingleValue for Bool

Auto Trait Implementations§

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impl RefUnwindSafe for Bool

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impl Send for Bool

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impl Sync for Bool

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impl Unpin for Bool

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impl UnwindSafe for Bool

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoNotNullable for Twhere T: SqlType<IsNull = NotNull>,

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type NotNullable = T

The not nullable representation of this type. Read more
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impl<T> IntoNullable for Twhere T: SqlType<IsNull = NotNull> + SingleValue,

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type Nullable = Nullable<T>

The nullable representation of this type. Read more
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impl<T> IntoSql for T

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fn into_sql<T>(self) -> AsExprOf<Self, T>where Self: AsExpression<T> + Sized, T: SqlType + TypedExpressionType,

Convert self to an expression for Diesel’s query builder. Read more
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fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

Convert &self to an expression for Diesel’s query builder. Read more
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<ST> TypedExpressionType for STwhere ST: SingleValue,