查询已获证书的学员列表

def solve():
    from pyodide.http import open_url
    instructors_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/instructors.csv").read()
    courses_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/courses.csv").read()
    students_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/students.csv").read()
    enrollments_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/enrollments.csv").read()
    assignments_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/assignments.csv").read()
    submissions_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/submissions.csv").read()
    certificates_csv = open_url("https://data.zuihe.com/dbd/education/state_D02/certificates.csv").read()
    import sqlite3
    import pandas as pd
    from io import StringIO

    conn = sqlite3.connect(':memory:')
    pd.read_csv(StringIO(certificates_csv)).to_sql('certificates', conn, index=False, if_exists='replace')
    pd.read_csv(StringIO(students_csv)).to_sql('students', conn, index=False, if_exists='replace')
    pd.read_csv(StringIO(courses_csv)).to_sql('courses', conn, index=False, if_exists='replace')

    result = pd.read_sql_query("""
        SELECT s.name AS student_name, c.title AS course_title,
               cert.cert_no, cert.issued_at
        FROM certificates cert
        JOIN students s ON cert.student_id = s.id
        JOIN courses c ON cert.course_id = c.id
        ORDER BY cert.issued_at
    """, conn)
    print(result.to_string(index=False))
    conn.close()