[−][src]Struct diesel::sql_types::Text
The text SQL type.
On all backends strings must be valid UTF-8. On PostgreSQL strings must not include nul bytes.
Schema inference will treat all variants of TEXT
as this type (e.g.
VARCHAR
, MEDIUMTEXT
, etc).
ToSql
impls
FromSql
impls
Trait Implementations
impl<DB: Backend<RawValue = [u8]>> FromSql<Text, DB> for *const str
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The returned pointer is only valid for the lifetime to the argument of
from_sql
. This impl is intended for uses where you want to write a new
impl in terms of String
, but don't want to allocate. We have to return a
raw pointer instead of a reference with a lifetime due to the structure of
FromSql
impl<'expr> AsExpression<Text> for &'expr String
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type Expression = Bound<Text, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
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impl<'expr2, 'expr> AsExpression<Text> for &'expr2 &'expr String
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type Expression = Bound<Text, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
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impl AsExpression<Text> for String
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type Expression = Bound<Text, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
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impl<'expr> AsExpression<Text> for &'expr str
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type Expression = Bound<Text, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
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impl<'expr2, 'expr> AsExpression<Text> for &'expr2 &'expr str
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type Expression = Bound<Text, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
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impl QueryId for Text
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type QueryId = Text
A type which uniquely represents Self
in a SQL query. Read more
const HAS_STATIC_QUERY_ID: bool
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fn query_id() -> Option<TypeId>
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Returns the type id of Self::QueryId
if Self::HAS_STATIC_QUERY_ID
. Returns None
otherwise. Read more
impl<DB: Backend> ToSql<Text, DB> for str
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impl<DB> ToSql<Text, DB> for String where
DB: Backend,
str: ToSql<Text, DB>,
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DB: Backend,
str: ToSql<Text, DB>,
impl SqlOrd for Text
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impl HasSqlType<Text> for Mysql
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impl NotNull for Text
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impl SingleValue for Text
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impl Copy for Text
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impl Default for Text
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impl Clone for Text
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fn clone(&self) -> Text
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Debug for Text
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Auto Trait Implementations
impl Unpin for Text
impl Sync for Text
impl Send for Text
impl UnwindSafe for Text
impl RefUnwindSafe for Text
Blanket Implementations
impl<T> IntoSql for T
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fn into_sql<T>(self) -> AsExprOf<Self, T> where
Self: AsExpression<T> + Sized,
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Self: AsExpression<T> + Sized,
Convert self
to an expression for Diesel's query builder. Read more
fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T> where
&'a Self: AsExpression<T>,
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&'a Self: AsExpression<T>,
Convert &self
to an expression for Diesel's query builder. Read more
impl<T> IntoNullable for T where
T: NotNull,
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T: NotNull,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,