Struct hdbconnect_impl::FieldMetadata

pub struct FieldMetadata { /* private fields */ }

Metadata of a field in a ResultSet.

Implementations

impl FieldMetadata

pub fn schemaname(&self) -> &str

Database schema of the field.

pub fn tablename(&self) -> &str

Database table.

pub fn columnname(&self) -> &str

Column name.

pub fn displayname(&self) -> &str

Display name of the column.

pub fn type_id(&self) -> TypeId

Returns the id of the value type.

pub fn is_nullable(&self) -> bool

True if column can contain NULL values.

pub fn precision(&self) -> i16

The length or the precision of the value.

Is -1 for LOB types.

pub fn scale(&self) -> i16

The scale of the value.

Is 0 for all types where a scale does not make sense.

pub fn has_default(&self) -> bool

Returns true if the column has a default value.

pub fn is_read_only(&self) -> bool

Returns true if the column is read-only.

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 column is of array type.

Trait Implementations

impl Clone for FieldMetadata

fn clone(&self) -> FieldMetadata

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FieldMetadata

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

Formats the value using the given formatter.