Enum ColumnValue 

pub enum ColumnValue {
    Null,
    Integer(i64),
    Double(f64),
    Boolean(bool),
    String(String),
    Blob(Vec<u8>),
    InfMin,
    InfMax,
}

Variants

Null

这个值是内部使用的，仅仅是用来标记在 UpdateRow 的时候要标记删除某个列的所有版本使用的。

Integer(i64)

Double(f64)

Boolean(bool)

String(String)

Blob(Vec<u8>)

InfMin

InfMax

Trait Implementations

impl Clone for ColumnValue

fn clone(&self) -> ColumnValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnValue

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

Formats the value using the given formatter.

impl Default for ColumnValue

fn default() -> ColumnValue

Returns the “default value” for a type.

impl From<&ColumnValue> for DataType

这里没有处理 MIN 和 MAX 的数据…

fn from(value: &ColumnValue) -> Self

Converts to this type from the input type.

impl PartialEq for ColumnValue

fn eq(&self, other: &ColumnValue) -> 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 PartialOrd for ColumnValue

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ColumnValue