Struct ColumnDef 

pub struct ColumnDef {
    pub name: String,
    pub col_type: ColumnType,
    pub nullable: bool,
    pub primary_key: bool,
    pub auto_increment: bool,
    pub default_value: Option<String>,
    pub unique: bool,
}

列定义

Fields

name: String

列名

col_type: ColumnType

列类型

nullable: bool

是否可空

primary_key: bool

是否主键

auto_increment: bool

是否自增

default_value: Option<String>

默认值

unique: bool

是否唯一

Implementations

impl ColumnDef

pub fn new(name: impl Into<String>, col_type: ColumnType) -> Self

创建新的列定义

pub fn not_null(self) -> Self

设置为不可空

pub fn primary_key(self) -> Self

设置为主键

pub fn auto_increment(self) -> Self

设置为自增

pub fn default(self, value: impl Into<String>) -> Self

设置默认值

pub fn unique(self) -> Self

设置为唯一

pub fn to_sql(&self) -> String

生成建表 SQL 片段（使用当前数据库类型）

pub fn to_sql_for(&self, db_type: DatabaseType) -> String

生成指定数据库类型的建表 SQL 片段

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<'de> Deserialize<'de> for ColumnDef

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ColumnDef

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.