Sergey Dimitrov@sergey_dimitrov4RussiaFollow BadgesProblem SolvingSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork Experiencesergey_dimitrov4 has not updated employment details yet.Educationsergey_dimitrov4 has not updated education details yet.