發送短信

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 _    _      ___     ______      ___      _____   
| || | ||   / _ \\  |      \\   / _ \\   /  ___|| 
| || | ||  | / \ || |  --  //  | / \ || | // __   
| \\_/ ||  | \_/ || |  --  \\  | \_/ || | \\_\ || 
 \____//    \___//  |______//   \___//   \____//  
  `---`     `---`   `------`    `---`     `---`

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發送短信 : Natural language explanation of SQL queries for database education