let database_url = "mysql://username:password@localhost:3306/database_name"; 请将username、password、localhost和database_name替换为你的实际数据库凭据和配置。 使用sqlx建立与MySQL的连接: 使用sqlx::MySqlPool来建立一个连接池,这样你可以重用连接并提高效率。以下是一个示例代码片段: rust use sqlx::...
}#[tokio::main]asyncfnmain() - >Result< (), sqlx::Error > {letpool = MySqlPool::connect("mysql://username:password@hostname:port/database").await?;letmutconn = pool.acquire().await?;letmutrows = sqlx::query("SELECT id, name FROM users") .map(|row: sqlx::mysql::MySqlRow| {...
DATABASE_URL=sqlite:///data/db.sqlit to: DATABASE_URL=sqlite:///${CARGO_MANIFEST_DIR}/data/db.sqlite. 👍1 leshow commented on Oct 6, 2021 leshow on Oct 6, 2021 ContributorAuthor Alright, if I'm not the only one running into this then I'll re-open. leshowreopened this on Oct...
usesqlx::{SqlitePool, sqlite::SqliteConnectOptions};#[tokio::main]asyncfnmain() - >Result< (), sqlx::Error > {letdatabase_url ="sqlite:mydatabase.db";letoptions = SqliteConnectOptions::new() .filename(database_url);letpool = SqlitePool::connect_with(options).await?;Ok(()) } 这里...
use sqlx::{Pool, Postgres}; use tokio; #[tokio::main] async fn main() -> Result<(), sqlx::Error> { let database_url = "postgres://username:password@localhost:5432/mydb"; let pool = Pool::<Postgres>::connect(database_url).await?; Ok(()) } 执行查询 接下来,执行一个简单的...
DATABASE_URL=postgres://cml:123456@192.168.1.239:5432/rust_sqlx 其中, rust_sqlx 为数据库实例的名称 CRUD 说明 在main 中编写简单的 crud 示例。 dotenv().ok():在访问环境变量之前检查一下,防止因读取环境变量失败导致程序恐慌。 env::var("DATABASE_URL"):读取环境变量文件中的数据库连接字符串 ...
usesqlx::postgres::PgPoolOptions;// use sqlx::mysql::MySqlPoolOptions;// etc.#[async_std::main]// or #[tokio::main]asyncfnmain() ->Result<(), sqlx::Error> {// Create a connection poolletpool = PgPoolOptions::new() .max_connections(5) .connect(&env::var("DATABASE_URL")?)....
let database_url = "postgres://username:password@localhost/my_database"; let pool: Pool<Postgres> = PgPoolOptions::new() .max_connections(5) // Set the maximum number of connections .connect(&database_url) .await?; // Wait for connection to be established ...
DATABASE_URL=mysql://localhost/my_database The biggest downside toquery!()is that the output type cannot be named (due to Rust not officially supporting anonymous records). To address that, there is aquery_as!()macro that is identical except that you can name the output type. ...
Create/drop the database at DATABASE_URL sqlx database create sqlx database drop Create and run migrations sqlx migrate add <name> Creates a new file in migrations/<timestamp>-<name>.sql. Add your database schema changes to this new file. sqlx migrate run Compares the migration history of...