Added queries to identify and sample records with default timestamp
(1970-01-01 00:00:00) which resulted from invalid MySQL dates during
migration. These records need date recovery from the MySQL source.
Queries:
- Count records with default timestamp in both tables
- Sample first 10 records from rawdatacor with default timestamp
These will help quantify the scope of date recovery work needed.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>