Default connect mysql set some variables

[daiguadaidai]

Description

when connect mysql has default behavior, in mysql log

2023-03-06T16:00:24.911812+08:00	   15 Query	SET sql_mode=(SELECT CONCAT(@@sql_mode, ',PIPES_AS_CONCAT,NO_ENGINE_SUBSTITUTION')),time_zone='+00:00',NAMES utf8mb4 COLLATE utf8mb4_unicode_ci

The above default behavior will cause incorrect access to the database, such as time_zone='+00:00'

Do not give any default behavior when the user does not have custom parameters

Steps to Reproduce

Cargo.toml

chrono = {version = "0.4", features=["default", "serde"]}
sqlx = {version = "0.6", features=["default", "mysql", "all-types", "runtime-tokio-native-tls"]}
tokio = {version = "^1.23.0", features=["full"]}
sea-orm = {version = "0.11", features=["default", "runtime-tokio-native-tls", "sqlx-mysql"]}
log = {version = "0.4.17"}

Code

rdbc.rs

use sea_orm::{ConnectOptions, Database, DatabaseConnection, DbErr};
use std::time::Duration;

pub async fn get_orm_db(dsn: &str, is_log: bool) -> Result<DatabaseConnection, DbErr> {
    let mut opt = ConnectOptions::new(dsn.to_string());
    opt.max_connections(1)
        .min_connections(0)
        .connect_timeout(Duration::from_secs(10))
        .idle_timeout(Duration::from_secs(5))
        .max_lifetime(Duration::from_secs(5))
        .sqlx_logging(is_log)
        .sqlx_logging_level(log::LevelFilter::Info);

    Database::connect(opt).await
}

pub async fn get_orm_db_by_default(
    host: &str,
    port: i16,
    username: &str,
    password: &str,
    database: &str,
    is_log: bool,
) -> Result<DatabaseConnection, DbErr> {
    let dsn = format!(
        "mysql://{username}:{password}@{host}:{port}/{database}",
        username = username,
        password = password,
        host = host,
        port = port,
        database = database,
    );
    //  for MySQL, use MySqlPoolOptions::new()
    get_orm_db(&dsn, is_log).await
}

main.rs

pub mod rdbc;

fn main() {
    println!("Hello, world!");
}

#[cfg(test)]
mod tests {
    use crate::rdbc::get_orm_db_by_default;
    use sea_orm::{ConnectionTrait, DatabaseBackend, DbErr, Statement};

    #[tokio::test]
    async fn conn_test_01() -> Result<(), DbErr> {
        let db = get_orm_db_by_default("127.0.0.1", 3306, "HH", "oracle12", "easydb", true).await?;
        let _ = db
            .execute(Statement::from_string(
                DatabaseBackend::MySql,
                "SELECT 1".to_owned(),
            ))
            .await?;

        db.close().await
    }
}

**MySQL log **

2023-03-06T16:00:24.908676+08:00	   15 Connect	HH@127.0.0.1 on easydb using SSL/TLS
2023-03-06T16:00:24.911812+08:00	   15 Query	SET sql_mode=(SELECT CONCAT(@@sql_mode, ',PIPES_AS_CONCAT,NO_ENGINE_SUBSTITUTION')),time_zone='+00:00',NAMES utf8mb4 COLLATE utf8mb4_unicode_ci
2023-03-06T16:00:24.913169+08:00	   15 Prepare	SELECT 1
2023-03-06T16:00:24.913446+08:00	   15 Execute	SELECT 1
2023-03-06T16:00:24.913890+08:00	   15 Quit