#[repr(u32)]
pub enum AttrConnectionPooling {
    Off,
    OnePerDriver,
    OnePerHenv,
    DriverAware,
}
Expand description

Connection pool configuration

Possible values for ConnectionPooling attribute set with SQLSetEnvAttr to define which pooling scheme will be used.

See: https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlsetenvattr-function

Variants§

§

Off

Connection pooling is turned off. This is the default.

§

OnePerDriver

A single connection pool is supported for each driver. Every connection in a pool is associated with one driver.

§

OnePerHenv

A single connection pool is supported for each environment. Every connection in a pool is associated with one environment.

§

DriverAware

Use the connection-pool awareness feature of the driver, if it is available. If the driver does not support connection-pool awareness, DriverAware is ignored and OnePerHenv is used.

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

Connection pool default configuration

Returns the “default value” for a type. Read more
Converts to this type from the input type.
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.