在 KDE Plasma 桌面环境无法使用 TIM，提示：

X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 20 (X_GetProperty)
Resource id in failed request: 0x0
Serial number of failed request: 10
Current serial number in output stream: 10

编写一个 SQL 查询，查找 Person 表中所有重复的电子邮箱。