Struct hdbconnect::ParameterDescriptor

pub struct ParameterDescriptor { /* private fields */ }

Metadata for a parameter.

Implementations

impl ParameterDescriptor

pub fn binding(&self) -> ParameterBinding

Describes whether a parameter can be NULL or not, or if it has a default value.

pub fn is_nullable(&self) -> bool

Returns true if the column can contain NULL values.

pub fn has_default(&self) -> bool

Returns true if the column has a default value.

pub fn is_auto_incremented(&self) -> bool

Returns true if the column is auto-incremented.

pub fn is_array_type(&self) -> bool

Returns true if the parameter is of array type

pub fn type_id(&self) -> u8

Returns the id of the value type of the parameter. See also module type_id.

pub fn scale(&self) -> u16

Scale (for some numeric types only).

pub fn precision(&self) -> u16

Precision (for some numeric types only).

pub fn direction(&self) -> ParameterDirection

Describes whether a parameter is used for input, output, or both.

pub fn name(&self) -> Option<&String>

Returns the name of the parameter.

Trait Implementations

impl Clone for ParameterDescriptor

fn clone(&self) -> ParameterDescriptor

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ParameterDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.