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Sync customer_device Table
Source: MySQL (app_id = 5006, sync = 0)
Target: PostgreSQL (app_id = 1003)
Batch Size: 50 records
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Step 1: Connecting to databases...
✓ Connected

Step 2: Reading PostgreSQL schema...
  ✓ Found 23 columns

Step 3: Loading customer ID mappings...
  ✓ Loaded 1247 customer mappings

Step 4: Fetching unsynced device records from MySQL (LIMIT 50)...
  ✓ Found 'customer_device' table
  ✓ Sync column exists, filtering by sync = 0 or NULL
  Query: SELECT * FROM `customer_device` WHERE `app_id` = 5006...
  ⚠ No records found with app_id = 5006
  Tip: Check if:
    1. Records have sync = 0 or NULL
    2. Records have app_id = 5006
    3. Table 'customer_device' exists and has data