Struct sqlx::PgConnection [−][src]
pub struct PgConnection { /* fields omitted */ }
postgres
only.Expand description
A connection to a PostgreSQL database.
Trait Implementations
type Connection = &'c mut <Postgres as Database>::Connection
type Options = PgConnectOptions
Explicitly close this database connection. Read more
Checks if a connection to the database is still valid.
pub fn begin(
&mut self
) -> Pin<Box<dyn Future<Output = Result<Transaction<'_, <PgConnection as Connection>::Database>, Error>> + Send, Global>> where
PgConnection: Sized,
pub fn begin(
&mut self
) -> Pin<Box<dyn Future<Output = Result<Transaction<'_, <PgConnection as Connection>::Database>, Error>> + Send, Global>> where
PgConnection: Sized,
Begin a new transaction or establish a savepoint within the active transaction. Read more
The number of statements currently cached in the connection.
Removes all statements from the cache, closing them on the server if needed. Read more
fn transaction<'a, F, R, E>(
&'a mut self,
callback: F
) -> Pin<Box<dyn Future<Output = Result<R, E>> + Send + 'a, Global>> where
F: for<'c> FnOnce(&'c mut Transaction<'_, Self::Database>) -> Pin<Box<dyn Future<Output = Result<R, E>> + Send + 'c, Global>> + 'a + Send + Sync,
R: Send,
E: From<Error> + Send,
fn transaction<'a, F, R, E>(
&'a mut self,
callback: F
) -> Pin<Box<dyn Future<Output = Result<R, E>> + Send + 'a, Global>> where
F: for<'c> FnOnce(&'c mut Transaction<'_, Self::Database>) -> Pin<Box<dyn Future<Output = Result<R, E>> + Send + 'c, Global>> + 'a + Send + Sync,
R: Send,
E: From<Error> + Send,
Execute the function inside a transaction. Read more
Establish a new database connection. Read more
pub fn fetch_many<'e, 'q, E>(
self,
query: E
) -> Pin<Box<dyn Stream<Item = Result<Either<PgQueryResult, PgRow>, Error>> + Send + 'e, Global>> where
'q: 'e,
'c: 'e,
E: 'q + Execute<'q, <&'c mut PgConnection as Executor<'c>>::Database>,
pub fn fetch_many<'e, 'q, E>(
self,
query: E
) -> Pin<Box<dyn Stream<Item = Result<Either<PgQueryResult, PgRow>, Error>> + Send + 'e, Global>> where
'q: 'e,
'c: 'e,
E: 'q + Execute<'q, <&'c mut PgConnection as Executor<'c>>::Database>,
Execute multiple queries and return the generated results as a stream from each query, in a stream. Read more
Execute the query and returns at most one row.
pub fn prepare_with<'e, 'q>(
self,
sql: &'q str,
parameters: &'e [PgTypeInfo]
) -> Pin<Box<dyn Future<Output = Result<PgStatement<'q>, Error>> + Send + 'e, Global>> where
'q: 'e,
'c: 'e,
pub fn prepare_with<'e, 'q>(
self,
sql: &'q str,
parameters: &'e [PgTypeInfo]
) -> Pin<Box<dyn Future<Output = Result<PgStatement<'q>, Error>> + Send + 'e, Global>> where
'q: 'e,
'c: 'e,
Prepare the SQL query, with parameter type information, to inspect the type information about its parameters and results. Read more
pub fn describe<'e, 'q>(
self,
sql: &'q str
) -> Pin<Box<dyn Future<Output = Result<Describe<<&'c mut PgConnection as Executor<'c>>::Database>, Error>> + Send + 'e, Global>> where
'q: 'e,
'c: 'e,
Execute the query and return the total number of rows affected.
Execute multiple queries and return the rows affected from each query, in a stream.
Execute the query and return the generated results as a stream.
Execute the query and return all the generated results, collected into a Vec
.
Execute the query and returns exactly one row.
pub fn ensure_migrations_table(
&mut self
) -> Pin<Box<dyn Future<Output = Result<(), MigrateError>> + Send, Global>>
pub fn dirty_version(
&mut self
) -> Pin<Box<dyn Future<Output = Result<Option<i64>, MigrateError>> + Send, Global>>
pub fn list_applied_migrations(
&mut self
) -> Pin<Box<dyn Future<Output = Result<Vec<AppliedMigration, Global>, MigrateError>> + Send, Global>>
the version number of the server in libpq
format
Auto Trait Implementations
impl !RefUnwindSafe for PgConnection
impl Send for PgConnection
impl Sync for PgConnection
impl Unpin for PgConnection
impl !UnwindSafe for PgConnection
Blanket Implementations
Mutably borrows from an owned value. Read more
fn fmt_binary(self) -> FmtBinary<Self> where
Self: Binary,
fn fmt_binary(self) -> FmtBinary<Self> where
Self: Binary,
Causes self
to use its Binary
implementation when Debug
-formatted.
fn fmt_display(self) -> FmtDisplay<Self> where
Self: Display,
fn fmt_display(self) -> FmtDisplay<Self> where
Self: Display,
Causes self
to use its Display
implementation when
Debug
-formatted. Read more
fn fmt_lower_exp(self) -> FmtLowerExp<Self> where
Self: LowerExp,
fn fmt_lower_exp(self) -> FmtLowerExp<Self> where
Self: LowerExp,
Causes self
to use its LowerExp
implementation when
Debug
-formatted. Read more
fn fmt_lower_hex(self) -> FmtLowerHex<Self> where
Self: LowerHex,
fn fmt_lower_hex(self) -> FmtLowerHex<Self> where
Self: LowerHex,
Causes self
to use its LowerHex
implementation when
Debug
-formatted. Read more
Causes self
to use its Octal
implementation when Debug
-formatted.
fn fmt_pointer(self) -> FmtPointer<Self> where
Self: Pointer,
fn fmt_pointer(self) -> FmtPointer<Self> where
Self: Pointer,
Causes self
to use its Pointer
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Debug
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fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,
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Self: UpperExp,
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fn fmt_upper_hex(self) -> FmtUpperHex<Self> where
Self: UpperHex,
fn fmt_upper_hex(self) -> FmtUpperHex<Self> where
Self: UpperHex,
Causes self
to use its UpperHex
implementation when
Debug
-formatted. Read more
impl<T> Pipe for T where
T: ?Sized,
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T: ?Sized,
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and passes that borrow into the pipe function. Read more
fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R where
R: 'a,
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Self: Borrow<B>,
R: 'a,
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Self: Borrow<B>,
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&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
R: 'a,
B: 'a + ?Sized,
fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
R: 'a,
B: 'a + ?Sized,
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U: 'a + ?Sized,
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Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,
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Self: AsMut<U>,
U: 'a + ?Sized,
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fn pipe_as_ref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: AsRef<T>,
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Self: AsRef<T>,
T: 'a,
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Pipes a trait borrow into a function that cannot normally be called in suffix position. Read more
fn pipe_as_mut<'a, T, R>(&'a mut self, func: impl FnOnce(&'a mut T) -> R) -> R where
Self: AsMut<T>,
T: 'a,
R: 'a,
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&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
Self: BorrowMut<T>,
T: 'a,
R: 'a,
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&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
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T: 'a,
R: 'a,
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&'a mut self,
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) -> R where
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&'a mut self,
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) -> R where
Self: DerefMut,
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Pipes a mutable dereference into a function that cannot normally be called in suffix position. Read more
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type Output = T
type Output = T
Should always be Self
fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self where
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self where
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fn tap_mut_dbg<F, R>(self, func: F) -> Self where
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Calls tap_mut
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F: FnOnce(&T) -> R,
Calls tap_ref
in debug builds, and does nothing in release builds.
fn tap_ref_mut<F, R>(self, func: F) -> Self where
Self: AsMut<T>,
F: FnOnce(&mut T) -> R,
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Self: AsMut<T>,
F: FnOnce(&mut T) -> R,
Provides mutable access to the reference for modification.
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F: FnOnce(&mut T) -> R,
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Self: AsMut<T>,
F: FnOnce(&mut T) -> R,
Calls tap_ref_mut
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impl<T, U> TapBorrow<U> for T where
U: ?Sized,
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U: ?Sized,
fn tap_borrow<F, R>(self, func: F) -> Self where
Self: Borrow<T>,
F: FnOnce(&T) -> R,
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Self: Borrow<T>,
F: FnOnce(&T) -> R,
Provides immutable access to the borrow for inspection. Read more
fn tap_borrow_dbg<F, R>(self, func: F) -> Self where
Self: Borrow<T>,
F: FnOnce(&T) -> R,
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Self: Borrow<T>,
F: FnOnce(&T) -> R,
Calls tap_borrow
in debug builds, and does nothing in release builds.
fn tap_borrow_mut<F, R>(self, func: F) -> Self where
Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
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Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
Provides mutable access to the borrow for modification.
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Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
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Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
Calls tap_borrow_mut
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Immutably dereferences self
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fn tap_deref_dbg<F, R>(self, func: F) -> Self where
Self: Deref,
F: FnOnce(&Self::Target) -> R,
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Self: Deref,
F: FnOnce(&Self::Target) -> R,
Calls tap_deref
in debug builds, and does nothing in release builds.
fn tap_deref_mut<F, R>(self, func: F) -> Self where
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
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Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
Mutably dereferences self
for modification.
fn tap_deref_mut_dbg<F, R>(self, func: F) -> Self where
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
fn tap_deref_mut_dbg<F, R>(self, func: F) -> Self where
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
Calls tap_deref_mut
in debug builds, and does nothing in release
builds. Read more