A statement parameter that can represent null (empty) values.
This trait is analogous to standard Option, but keeps type information
for empty values. In some cases database engine cannot infer null parameter
type - instances of this trait can be used then.
An implicit conversion is provided from Option to instances of this
trait - see Opt2OptParam.
This trait does not provide any operations. It is recommended to use
Option instances and at the final stage convert them to instances of
this trait when passed as statement parameters.
A statement parameter that can represent null (empty) values.
This trait is analogous to standard Option, but keeps type information for empty values. In some cases database engine cannot infer null parameter type - instances of this trait can be used then.
An implicit conversion is provided from Option to instances of this trait - see Opt2OptParam.
This trait does not provide any operations. It is recommended to use Option instances and at the final stage convert them to instances of this trait when passed as statement parameters.