Language: Go
Label: safe
CWE: CWE-89 \u2014 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.

Code:
func (r *MySQL) ProbeWithPing(db *sql.DB) error {
	if err := db.Ping(); err != nil {
		return err
	}
	row, err := db.Query("show status like \"uptime\"") // run a SQL to test
	if err != nil {
		return err
	}
	defer row.Close()
	return nil
}