Struct ColumnDesc 

pub struct ColumnDesc { /* private fields */ }

The descriptor of a column.

Implementations

impl ColumnDesc

pub fn new( column_datatype: LogicalType, primary: Option<usize>, is_unique: bool, default: Option<ScalarExpression>, ) -> Result<ColumnDesc, DatabaseError>

Trait Implementations

impl Clone for ColumnDesc

fn clone(&self) -> ColumnDesc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnDesc

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

Formats the value using the given formatter.

impl Hash for ColumnDesc

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ColumnDesc

fn eq(&self, other: &ColumnDesc) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ReferenceSerialization for ColumnDesc

fn encode<W: Write>( &self, writer: &mut W, is_direct: bool, reference_tables: &mut ReferenceTables, ) -> Result<(), DatabaseError>

fn decode<T: Transaction, R: Read>( reader: &mut R, drive: Option<(&T, &SharedLruCache<TableName, TableCatalog>)>, reference_tables: &ReferenceTables, ) -> Result<Self, DatabaseError>

impl Eq for ColumnDesc

impl StructuralPartialEq for ColumnDesc