diff --git a/manager/sql/manager_sql.go b/manager/sql/manager_sql.go
index 2aac6cd..293b4e9 100644
--- a/manager/sql/manager_sql.go
+++ b/manager/sql/manager_sql.go
@@ -190,15 +190,8 @@ func (s *SQLManager) Create(policy Policy) (err error) {
 	}
 
 	switch s.db.DriverName() {
-	case "postgres", "pgx":
-		if _, err = tx.Exec(s.db.Rebind("INSERT INTO ladon_policy (id, description, effect, conditions) VALUES (?, ?, ?, ?) ON CONFLICT DO NOTHING"), policy.GetID(), policy.GetDescription(), policy.GetEffect(), conditions); err != nil {
-			if err := tx.Rollback(); err != nil {
-				return errors.WithStack(err)
-			}
-			return errors.WithStack(err)
-		}
-	case "mysql":
-		if _, err = tx.Exec(s.db.Rebind("INSERT IGNORE INTO ladon_policy (id, description, effect, conditions) VALUES (?, ?, ?, ?)"), policy.GetID(), policy.GetDescription(), policy.GetEffect(), conditions); err != nil {
+	case "postgres", "pgx", "mysql":
+		if _, err = tx.Exec(s.db.Rebind("INSERT INTO ladon_policy (id, description, effect, conditions) SELECT ?, ?, ?, ? WHERE NOT EXISTS (SELECT 1 FROM ladon_policy WHERE id = ?)"), policy.GetID(), policy.GetDescription(), policy.GetEffect(), conditions, policy.GetID()); err != nil {
 			if err := tx.Rollback(); err != nil {
 				return errors.WithStack(err)
 			}
@@ -232,30 +225,15 @@ func (s *SQLManager) Create(policy Policy) (err error) {
 			}
 
 			switch s.db.DriverName() {
-			case "postgres", "pgx":
-				if _, err := tx.Exec(s.db.Rebind(fmt.Sprintf("INSERT INTO ladon_%s (id, template, compiled, has_regex) VALUES (?, ?, ?, ?) ON CONFLICT DO NOTHING", v.t)), id, template, compiled.String(), strings.Index(template, string(policy.GetStartDelimiter())) > -1); err != nil {
-					if err := tx.Rollback(); err != nil {
-						return errors.WithStack(err)
-					}
-					return errors.WithStack(err)
-				}
-
-				if _, err := tx.Exec(s.db.Rebind(fmt.Sprintf("INSERT INTO ladon_policy_%s_rel (policy, %s) VALUES (?, ?) ON CONFLICT DO NOTHING", v.t, v.t)), policy.GetID(), id); err != nil {
-					if err := tx.Rollback(); err != nil {
-						return errors.WithStack(err)
-					}
-					return errors.WithStack(err)
-				}
-				break
-			case "mysql":
-				if _, err := tx.Exec(s.db.Rebind(fmt.Sprintf("INSERT IGNORE INTO ladon_%s (id, template, compiled, has_regex) VALUES (?, ?, ?, ?)", v.t)), id, template, compiled.String(), strings.Index(template, string(policy.GetStartDelimiter())) > -1); err != nil {
+			case "postgres", "pgx", "mysql":
+				if _, err := tx.Exec(s.db.Rebind(fmt.Sprintf("INSERT INTO ladon_%s (id, template, compiled, has_regex) SELECT ?, ?, ?, ? WHERE NOT EXISTS (SELECT 1 FROM ladon_%[1]s WHERE id = ?)", v.t)), id, template, compiled.String(), strings.Index(template, string(policy.GetStartDelimiter())) > -1, id); err != nil {
 					if err := tx.Rollback(); err != nil {
 						return errors.WithStack(err)
 					}
 					return errors.WithStack(err)
 				}
 
-				if _, err := tx.Exec(s.db.Rebind(fmt.Sprintf("INSERT IGNORE INTO ladon_policy_%s_rel (policy, %s) VALUES (?, ?)", v.t, v.t)), policy.GetID(), id); err != nil {
+				if _, err := tx.Exec(s.db.Rebind(fmt.Sprintf("INSERT INTO ladon_policy_%s_rel (policy, %[1]s) SELECT ?, ? WHERE NOT EXISTS (SELECT 1 FROM ladon_policy_%[1]s_rel WHERE policy = ? AND %[1]s = ?)", v.t)), policy.GetID(), id, policy.GetID(), id); err != nil {
 					if err := tx.Rollback(); err != nil {
 						return errors.WithStack(err)
 					}