[−][src]Struct google_spanner1::Statement
A single DML statement.
This type is not used in any activity, and only used as part of another schema.
Fields
param_types: Option<HashMap<String, Type>>
It is not always possible for Cloud Spanner to infer the right SQL type
from a JSON value. For example, values of type BYTES
and values
of type STRING
both appear in params as JSON strings.
In these cases, param_types
can be used to specify the exact
SQL type for some or all of the SQL statement parameters. See the
definition of Type for more information
about SQL types.
params: Option<HashMap<String, String>>
The DML string can contain parameter placeholders. A parameter
placeholder consists of '@'
followed by the parameter
name. Parameter names consist of any combination of letters,
numbers, and underscores.
Parameters can appear anywhere that a literal value is expected. The
same parameter name can be used more than once, for example:
"WHERE id > @msg_id AND id < @msg_id + 100"
It is an error to execute an SQL statement with unbound parameters.
Parameter values are specified using params
, which is a JSON
object whose keys are parameter names, and whose values are the
corresponding parameter values.
sql: Option<String>
Required. The DML string.
Trait Implementations
impl Part for Statement
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impl Clone for Statement
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impl Default for Statement
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impl Debug for Statement
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impl Serialize for Statement
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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
__S: Serializer,
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__S: Serializer,
impl<'de> Deserialize<'de> for Statement
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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
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__D: Deserializer<'de>,
Auto Trait Implementations
impl Send for Statement
impl Sync for Statement
impl Unpin for Statement
impl UnwindSafe for Statement
impl RefUnwindSafe for Statement
Blanket Implementations
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> 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, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = !
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,
impl<T> Typeable for T where
T: Any,
T: Any,
impl<T> DeserializeOwned for T where
T: Deserialize<'de>,
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T: Deserialize<'de>,