Xu Gao@gaoxuhappyData AnalystNetherlandsFollow BadgesSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork Experiencegaoxuhappy has not updated employment details yet.Educationgaoxuhappy has not updated education details yet.