修改表唯一约束

back/services/cron.ts

@@ -31,12 +31,6 @@ export default class CronService {
   }
 
   public async insert(payload: Crontab): Promise<Crontab> {
-    const cron = await CrontabModel.findOne({
-      where: { command: payload.command },
-    });
-    if (cron) {
-      return cron;
-    }
     return await CrontabModel.create(payload, { returning: true });
   }