Enum SqlValue 

pub enum SqlValue {
    Null,
    Integer(i64),
    Real(f64),
    Text(String),
    Blob(Vec<u8>),
}

SQLite 值类型

Variants

Null

NULL 值

Integer(i64)

整数

Real(f64)

浮点数

Text(String)

文本

Blob(Vec<u8>)

二进制数据

Implementations

impl SqlValue

pub fn is_null(&self) -> bool

判断是否为 NULL

pub fn as_i64(&self) -> Option<i64>

尝试转换为 i64

pub fn as_f64(&self) -> Option<f64>

尝试转换为 f64

pub fn as_str(&self) -> Option<&str>

尝试转换为字符串引用

pub fn as_bytes(&self) -> Option<&[u8]>

尝试转换为字节切片

pub fn as_bool(&self) -> Option<bool>

尝试转换为 bool

Trait Implementations

impl Clone for SqlValue

fn clone(&self) -> SqlValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SqlValue

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

Formats the value using the given formatter.

impl Display for SqlValue

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

Formats the value using the given formatter.

impl FromSql for SqlValue

fn column_result(value: ValueRef<'_>) -> FromSqlResult<Self>

Converts SQLite value into Rust value.

impl PartialEq for SqlValue

fn eq(&self, other: &SqlValue) -> 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 ToSql for SqlValue

fn to_sql(&self) -> Result<ToSqlOutput<'_>>

Converts Rust value to SQLite value

impl StructuralPartialEq for SqlValue