pub enum Database {
Sqlite(Database),
PostgreSQL(Database),
MySQL(Database),
MSSQL(Database),
}Expand description
统一的 Database 枚举
Variants§
Implementations§
Source§impl Database
impl Database
Sourcepub async fn connect(db_type: DbType, connection_string: &str) -> Result<Self>
pub async fn connect(db_type: DbType, connection_string: &str) -> Result<Self>
连接到数据库,根据 DbType 选择后端
Sourcepub fn create_table<T: Model>(&self) -> CreateTableExecutor<'_, T>
pub fn create_table<T: Model>(&self) -> CreateTableExecutor<'_, T>
创建表 - 返回执行器
Sourcepub async fn validate_table<T: Model>(&self) -> Result<()>
pub async fn validate_table<T: Model>(&self) -> Result<()>
验证表结构
Sourcepub fn insert<I: Insertable>(&self, models: I) -> InsertExecutor<'_, I>
pub fn insert<I: Insertable>(&self, models: I) -> InsertExecutor<'_, I>
插入记录 - 返回执行器
Sourcepub fn insert_or_update<I: Insertable>(
&self,
models: I,
) -> InsertOrUpdateExecutor<'_, I>
pub fn insert_or_update<I: Insertable>( &self, models: I, ) -> InsertOrUpdateExecutor<'_, I>
插入或更新记录 - 返回执行器
Sourcepub fn insert_or_ignore<I: Insertable>(
&self,
models: I,
) -> InsertOrIgnoreExecutor<'_, I>
pub fn insert_or_ignore<I: Insertable>( &self, models: I, ) -> InsertOrIgnoreExecutor<'_, I>
插入或忽略记录 - 返回执行器(存在重复主键时忽略)
Sourcepub async fn find_by_id<T: Model + 'static + Send + Sync>(
&self,
key: impl PrimaryKey,
) -> Result<Option<T>>
pub async fn find_by_id<T: Model + 'static + Send + Sync>( &self, key: impl PrimaryKey, ) -> Result<Option<T>>
根据主键查找单条记录 支持单主键和复合主键
ⓘ
// 单主键
let user: Option<User> = db.find_by_id::<User>(1).await?;
// 复合主键
let record: Option<OrderItem> = db.find_by_id::<OrderItem>((1, 2)).await?;Sourcepub fn select<T: Model>(&self) -> SelectExecutor<'_, T>
pub fn select<T: Model>(&self) -> SelectExecutor<'_, T>
创建 Select 查询执行器
Sourcepub fn select_column<T: Model, V>(&self) -> GroupedSelectExecutor<'_, T, V>
pub fn select_column<T: Model, V>(&self) -> GroupedSelectExecutor<'_, T, V>
创建分组聚合查询执行器
Sourcepub fn delete<T: Model>(&self) -> DeleteExecutor<'_, T>
pub fn delete<T: Model>(&self) -> DeleteExecutor<'_, T>
创建 Delete 执行器
Sourcepub fn update<T: Model>(&self) -> UpdateExecutor<'_, T>
pub fn update<T: Model>(&self) -> UpdateExecutor<'_, T>
创建 Update 执行器
Sourcepub fn from<T: Model + 'static, R: Model>(
&self,
) -> RelatedSelectExecutor<'_, T, R>
pub fn from<T: Model + 'static, R: Model>( &self, ) -> RelatedSelectExecutor<'_, T, R>
创建 Related 查询执行器(关联查询)
Sourcepub async fn begin(&self) -> Result<Transaction<'_>>
pub async fn begin(&self) -> Result<Transaction<'_>>
开始事务
Sourcepub fn drop_table<T: Model>(&self) -> DropTableExecutor<'_, T>
pub fn drop_table<T: Model>(&self) -> DropTableExecutor<'_, T>
删除表 - 返回执行器
Sourcepub async fn exec_table<T: Model>(&self, sql: &str) -> Result<Vec<T>>
👎Deprecated since 0.1.0: 请使用 execute 方法
pub async fn exec_table<T: Model>(&self, sql: &str) -> Result<Vec<T>>
请使用 execute 方法
执行原生 SQL 查询并返回模型列表(向后兼容)
Sourcepub async fn exec_non_query(&self, sql: &str) -> Result<u64>
pub async fn exec_non_query(&self, sql: &str) -> Result<u64>
执行原生非查询 SQL 并返回影响的行数
Sourcepub fn create_pool(db_type: DbType, connection_string: &str) -> PoolBuilder
pub fn create_pool(db_type: DbType, connection_string: &str) -> PoolBuilder
创建连接池
Auto Trait Implementations§
impl !RefUnwindSafe for Database
impl !UnwindSafe for Database
impl Freeze for Database
impl Send for Database
impl Sync for Database
impl Unpin for Database
impl UnsafeUnpin for Database
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