Struct mysql::Conn [−][src]
pub struct Conn(_);
Expand description
Mysql connection.
Implementations
Returns connection identifier.
Returns number of rows affected by the last query.
Returns last insert id of the last query.
Returns zero if there was no last insert id.
Info, reported by the server.
Will be empty if not defined.
Executes COM_PING
on Conn
. Return true
on success or false
on error.
Executes COM_INIT_DB
on Conn
.
Starts new transaction with provided options.
readonly
is only available since MySQL 5.6.5.
Sets a callback to handle requests for local files. These are
caused by using LOAD DATA LOCAL INFILE
queries. The
callback is passed the filename, and a Write
able object
to receive the contents of that file.
Specifying None
will reset the handler to the one specified
in the Opts
for this connection.
Turns this connection into a binlog stream.
You can use SHOW BINARY LOGS
to get the current logfile and position from the master.
If the request’s filename
is empty, the server will send the binlog-stream
of the first known binlog.
Trait Implementations
Perfoms text query.
Prepares the given query
as a prepared statement.
This function will close the given statement on the server side.
fn exec_iter<S, P>(
&mut self,
stmt: S,
params: P
) -> Result<QueryResult<'_, '_, '_, Binary>> where
S: AsStatement,
P: Into<Params>,
fn exec_iter<S, P>(
&mut self,
stmt: S,
params: P
) -> Result<QueryResult<'_, '_, '_, Binary>> where
S: AsStatement,
P: Into<Params>,
Executes the given stmt
with the given params
.
Performs text query and collects the first result set.
Same as Queryable::query
but useful when you not sure what your schema is.
Performs text query and returns the first row of the first result set.
fn query_first_opt<T, Q>(
&mut self,
query: Q
) -> Result<Option<StdResult<T, FromRowError>>> where
Q: AsRef<str>,
T: FromRow,
fn query_first_opt<T, Q>(
&mut self,
query: Q
) -> Result<Option<StdResult<T, FromRowError>>> where
Q: AsRef<str>,
T: FromRow,
Same as Queryable::query_first
but useful when you not sure what your schema is.
Performs text query and maps each row of the first result set.
fn query_map_opt<T, F, Q, U>(&mut self, query: Q, f: F) -> Result<Vec<U>> where
Q: AsRef<str>,
T: FromRow,
F: FnMut(StdResult<T, FromRowError>) -> U,
fn query_map_opt<T, F, Q, U>(&mut self, query: Q, f: F) -> Result<Vec<U>> where
Q: AsRef<str>,
T: FromRow,
F: FnMut(StdResult<T, FromRowError>) -> U,
Same as Queryable::query_map
but useful when you not sure what your schema is.
Performs text query and folds the first result set to a single value.
fn query_fold_opt<T, F, Q, U>(&mut self, query: Q, init: U, f: F) -> Result<U> where
Q: AsRef<str>,
T: FromRow,
F: FnMut(U, StdResult<T, FromRowError>) -> U,
fn query_fold_opt<T, F, Q, U>(&mut self, query: Q, init: U, f: F) -> Result<U> where
Q: AsRef<str>,
T: FromRow,
F: FnMut(U, StdResult<T, FromRowError>) -> U,
Same as Queryable::query_fold
but useful when you not sure what your schema is.
Performs text query and drops the query result.
fn exec_batch<S, P, I>(&mut self, stmt: S, params: I) -> Result<()> where
Self: Sized,
S: AsStatement,
P: Into<Params>,
I: IntoIterator<Item = P>,
fn exec_batch<S, P, I>(&mut self, stmt: S, params: I) -> Result<()> where
Self: Sized,
S: AsStatement,
P: Into<Params>,
I: IntoIterator<Item = P>,
Prepares the given statement, and executes it with each item in the given params iterator.
Executes the given stmt
and collects the first result set.
fn exec_opt<T, S, P>(
&mut self,
stmt: S,
params: P
) -> Result<Vec<StdResult<T, FromRowError>>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
fn exec_opt<T, S, P>(
&mut self,
stmt: S,
params: P
) -> Result<Vec<StdResult<T, FromRowError>>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
Same as Queryable::exec
but useful when you not sure what your schema is.
fn exec_first<T, S, P>(&mut self, stmt: S, params: P) -> Result<Option<T>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
fn exec_first<T, S, P>(&mut self, stmt: S, params: P) -> Result<Option<T>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
Executes the given stmt
and returns the first row of the first result set.
fn exec_first_opt<T, S, P>(
&mut self,
stmt: S,
params: P
) -> Result<Option<StdResult<T, FromRowError>>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
fn exec_first_opt<T, S, P>(
&mut self,
stmt: S,
params: P
) -> Result<Option<StdResult<T, FromRowError>>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
Same as Queryable::exec_first
but useful when you not sure what your schema is.
Executes the given stmt
and maps each row of the first result set.
fn exec_map_opt<T, S, P, F, U>(
&mut self,
stmt: S,
params: P,
f: F
) -> Result<Vec<U>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
F: FnMut(StdResult<T, FromRowError>) -> U,
fn exec_map_opt<T, S, P, F, U>(
&mut self,
stmt: S,
params: P,
f: F
) -> Result<Vec<U>> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
F: FnMut(StdResult<T, FromRowError>) -> U,
Same as Queryable::exec_map
but useful when you not sure what your schema is.
Executes the given stmt
and folds the first result set to a signel value.
fn exec_fold_opt<T, S, P, U, F>(
&mut self,
stmt: S,
params: P,
init: U,
f: F
) -> Result<U> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
F: FnMut(U, StdResult<T, FromRowError>) -> U,
fn exec_fold_opt<T, S, P, U, F>(
&mut self,
stmt: S,
params: P,
init: U,
f: F
) -> Result<U> where
S: AsStatement,
P: Into<Params>,
T: FromRow,
F: FnMut(U, StdResult<T, FromRowError>) -> U,
Same as Queryable::exec_fold
but useful when you not sure what your schema is.
Auto Trait Implementations
impl RefUnwindSafe for Conn
impl UnwindSafe for Conn
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
implementation when
Debug
-formatted. Read more
fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,
fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,
Causes self
to use its UpperExp
implementation when
Debug
-formatted. Read more
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
pub fn lift_into(self) -> U
pub fn lift_into(self) -> U
Performs the indexed conversion.
impl<T> Pipe for T where
T: ?Sized,
impl<T> Pipe for T where
T: ?Sized,
Pipes by value. This is generally the method you want to use. Read more
Borrows self
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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R: 'a,
Mutably borrows self
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Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,
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Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,
Borrows self
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fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,
fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,
Mutably borrows self
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R where
Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,
fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R where
Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,
Borrows self
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into the pipe function.
fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R where
Self: AsMut<U>,
U: 'a + ?Sized,
R: 'a,
fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R where
Self: AsMut<U>,
U: 'a + ?Sized,
R: 'a,
Mutably borrows self
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Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,
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Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,
Borrows self
, then passes self.deref()
into the pipe function.
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,
fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self where
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B: ?Sized,
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
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B: ?Sized,
Mutable access to the BorrowMut<B>
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,
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R: ?Sized,
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self where
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Calls .tap_borrow()
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self where
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Calls .tap_borrow_mut()
only in debug builds, and is erased in release
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,
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Calls .tap_ref()
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self where
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R: ?Sized,
Calls .tap_ref_mut()
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pub fn vzip(self) -> V