'userRole': userRole, sqlite3.OperationalError: near ".": 語法錯誤

Question

我試圖從兩天開始做這個選擇聲明，每次我得到錯誤時，

    course_user="Python"
    userRole="Student"


    my_cur.execute("SELECT DISTINCT(userTable.user_id), userTable.name FROM userTable, courseTable WHERE :courseTable.course_name, :userTable.role",
    {
        'course_name':  course_user,
        'userRole': userRole
        })

    result = my_cur.fetchall()

    conn.close()

Answer 1

據我所知，使用：-

my_cur.execute("SELECT DISTINCT(UserTable.user_id), userTable.name FROM userTable WHERE course_name=%s AND userRole=%s" % (course_user, userRole)