许炜 @xw2331225ChinaFollow BadgesProblem SolvingDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experiencexw2331225 has not updated employment details yet.Educationxw2331225 has not updated education details yet.