Enum Param 

pub enum Param {
    Null,
    Bool(bool),
    Int(i64),
    Uint(u64),
    Float(f64),
    Text(String),
    Blob(Vec<u8>),
}

查询参数

支持多种 Rust 类型到 SQLite 参数的转换

Variants

Null

NULL

Bool(bool)

布尔值

Int(i64)

整数

Uint(u64)

无符号整数

Float(f64)

浮点数

Text(String)

字符串

Blob(Vec<u8>)

二进制

Implementations

impl Param

pub fn null() -> Self

创建 NULL 参数

Trait Implementations

impl Clone for Param

fn clone(&self) -> Param

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Param

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

Formats the value using the given formatter.

impl From<&[u8]> for Param

fn from(v: &[u8]) -> Self

Converts to this type from the input type.

impl From<&String> for Param

fn from(v: &String) -> Self

Converts to this type from the input type.

impl From<&str> for Param

fn from(v: &str) -> Self

Converts to this type from the input type.

impl<T> From<Option<T>> for Param

where T: Into<Param>,

fn from(v: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Param

fn from(v: String) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Param

fn from(v: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Param

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Param

fn from(v: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Param

fn from(v: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Param

fn from(v: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Param

fn from(v: i64) -> Self

Converts to this type from the input type.

impl From<u32> for Param

fn from(v: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Param

fn from(v: u64) -> Self

Converts to this type from the input type.

impl From<usize> for Param

fn from(v: usize) -> Self

Converts to this type from the input type.

impl ToSql for Param

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

Converts Rust value to SQLite value