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 __   __     ___                ______    ______  
 \ \\/ //   / _ \\      ___    /_   _//  /_   _// 
  \   //   / //\ \\    /   ||   -| ||-     | ||   
  / . \\  |  ___  ||  | [] ||   _| ||_    _| ||   
 /_//\_\\ |_||  |_||   \__ ||  /_____//  /__//    
 `-`  --` `-`   `-`     -|_||  `-----`   `--`     
                         `-`

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發送短信 : Minimization of tree pattern queries with constraints