Struct ColumnDef 

pub struct ColumnDef {
    pub name: String,
    pub sql_type: String,
    pub nullable: bool,
    pub primary_key: bool,
    pub default: Option<String>,
}

列定义

Fields

name: String

列名

sql_type: String

SQL 类型（如 “VARCHAR(255)”、“BIGINT”）

nullable: bool

是否允许 NULL

primary_key: bool

是否主键

default: Option<String>

默认值（None 表示无默认值）

Implementations

impl ColumnDef

pub fn new( name: impl Into<String>, sql_type: impl Into<String>, nullable: bool, primary_key: bool, default: Option<String>, ) -> Self

创建新的列定义

Trait Implementations

impl Clone for ColumnDef

fn clone(&self) -> ColumnDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnDef

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

Formats the value using the given formatter.

impl PartialEq for ColumnDef

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ColumnDef