customer_id,email,phone,city,_load_id,load_ts
101,a@ex.com,700,Москва,batch_20250405_0800,2025-04-05 08:00
102,c@ex.com,701,СПб,batch_20250405_0800,2025-04-05 08:00
101,b@ex.com,700,Москва,batch_20250405_1200,2025-04-05 12:00
101,b@ex.com,700,Санкт-Петербург,batch_20250405_1800,2025-04-05 18:00