fix in mysql

src/database.rs

@@ -29,10 +29,18 @@ impl Database {
         sqlx::any::install_default_drivers();
         let kind = DatabaseKind::from_url(url)?;
         debug!(?kind, max_connections, "initializing database pool");
-        let pool = AnyPoolOptions::new()
-            .max_connections(max_connections)
-            .connect(url)
-            .await?;
+        let mut options = AnyPoolOptions::new().max_connections(max_connections);
+        if kind == DatabaseKind::MySql {
+            options = options.after_connect(|connection, _metadata| {
+                Box::pin(async move {
+                    sqlx::query("SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci")
+                        .execute(connection)
+                        .await?;
+                    Ok(())
+                })
+            });
+        }
+        let pool = options.connect(url).await?;
         if kind == DatabaseKind::Sqlite {
             debug!("applying SQLite connection pragmas");
             sqlx::query(queries::get(kind, queries::SQLITE_FOREIGN_KEYS_ON))