Liang Sun@sunliang0617United StatesFollowAboutCurrentPenn State University BadgesProblem SolvingSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork Experiencesunliang0617 has not updated employment details yet.Educationsunliang0617 has not updated education details yet.