YUFENG ZHANG@zhangyufeng5171Data AnalystUnited StatesFollow BadgesPythonSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork Experiencezhangyufeng5171 has not updated employment details yet.Educationzhangyufeng5171 has not updated education details yet.