Ziwei Meng@ZiweiData ScientistUnited StatesFollowAboutCurrentColumbia University BadgesProblem SolvingSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork ExperienceZiwei has not updated employment details yet.EducationZiwei has not updated education details yet.