===== 1. Customer id=1164 =====
  id                        = 1164
  mobile                    = $wtNj+QiRfyPlG7akDeJ9IA==$1$
  yz_open_id                = m0DoSB6S627938736830705664
  wx_union_id               = null
  wx_open_id                = null
  nickname                  = null
  name                      = null
  gender                    = 0
  birthday                  = null
  register_time             = null
  register_channel          = retail_minapp_shelf
  member_level_id           = null
  member_level_name         = null
  first_pay_time            = null
  last_pay_time             = null
  total_pay_amount          = 21.80
  total_pay_count           = 1
  customer_tags             = null
  etl_update_time           = 2026-03-19 14:34:07

yz_open_id = m0DoSB6S627938736830705664

===== 2. Orders for this yz_open_id =====
  [0] tid=E20260318120236063500049, oid=3133270467018227782, pay_time=null, created_time=2026-03-18 12:02:36, payment=21.80, status=TRADE_CLOSED

===== 3. Aggregation result for this yz_open_id =====
  yz_open_id                = m0DoSB6S627938736830705664
  buyer_phone               = $wtNj+QiRfyPlG7akDeJ9IA==$1$
  first_pay_time            = null
  last_pay_time             = null
  total_pay_amount          = 21.80
  total_pay_count           = 1
  source_platforms          = retail_minapp_shelf

===== 4. Sample: 5 customers with NULL first_pay_time =====
  id=15, yz_open_id=gopJBUIh612307439861112832, first=null, last=null, amount=0.00, count=0
  id=29, yz_open_id=RBmUTzIw619910823342542848, first=null, last=null, amount=0.00, count=0
  id=301, yz_open_id=dk30bXhc621423963670724608, first=null, last=null, amount=0.00, count=0
  id=403, yz_open_id=HKZwDOR2619915764425564160, first=null, last=null, amount=0.00, count=0
  id=454, yz_open_id=jZpq2Gvq613696894723452928, first=null, last=null, amount=0.00, count=0

===== 5. Order table pay_time stats =====
  total=6793, pay_time_null=16, pay_time_not_null=6777

===== 6. Sample: orders where pay_time IS NULL =====
  [0] tid=E20260318124237016806181, status=TRADE_CLOSED, created=2026-03-18 12:42:37
  [1] tid=E20260318124237016806181, status=TRADE_CLOSED, created=2026-03-18 12:42:37
  [2] tid=E20260318124237016806181, status=TRADE_CLOSED, created=2026-03-18 12:42:37
  [3] tid=E20260318122210081100023, status=TRADE_CLOSED, created=2026-03-18 12:22:11
  [4] tid=E20260318121139086206207, status=TRADE_CLOSED, created=2026-03-18 12:11:39