app/Server/Database/Sqlite/Schema/SqliteSchemaUpgradeTo9.cs

@@ -9,7 +9,7 @@ sealed class SqliteSchemaUpgradeTo9 : ISchemaUpgrade {
 		await SqliteSchema.CreateMessageAttachmentsTable(conn);
 		
 		await reporter.MainWork("Migrating message attachments...", 1, 3);
-		await conn.ExecuteAsync("INSERT INTO message_attachments (message_id, attachment_id) SELECT message_id, attachment_id FROM attachments a JOIN messages m USING (message_id)");
+		await conn.ExecuteAsync("INSERT INTO message_attachments (message_id, attachment_id) SELECT message_id, attachment_id FROM attachments");
 		
 		await reporter.MainWork("Applying schema changes...", 2, 3);
 		await conn.ExecuteAsync("DROP INDEX attachments_message_ix");

app/Version.cs

@@ -8,5 +8,5 @@ using DHT.Utils;
 namespace DHT.Utils;
 
 static class Version {
-	public const string Tag = "43.1.0.0";
+	public const string Tag = "43.0.0.0";
 }