在 KDE Plasma 桌面環境無法使用 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
編寫一個 SQL 查詢,查找 Person 表中所有重複的電子郵箱。