final release (true)

Hotel_Management.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 9.0.2, 2023-09-12T13:33:05. -->
+<!-- Written by QtCreator 9.0.2, 2023-09-12T14:14:54. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

login.cpp

@@ -20,7 +20,6 @@ login::login(QWidget *parent)
     bg->lower();
 
     db = QSqlDatabase::addDatabase("QMYSQL");
-    db.setDatabaseName("hotel");
     db.setHostName("localhost");
     db.setPort(3306);
     db.setUserName("root");
@@ -30,6 +29,9 @@ login::login(QWidget *parent)
     }else{
         qDebug("database connect failed");
     }
+    QSqlQuery query;
+    query.exec("CREATE DATABASE IF NOT EXISTS hotel;USE hotel;CREATE TABLE IF NOT EXISTS customer (account VARCHAR ( 20 ) PRIMARY KEY,password VARCHAR ( 20 ) NOT NULL,name VARCHAR ( 16 ) NOT NULL,gender VARCHAR ( 5 ) NOT NULL,id VARCHAR ( 16 ) NOT NULL,room_num INT );CREATE TABLE IF NOT EXISTS room (room_num INT PRIMARY KEY,type VARCHAR ( 20 ) NOT NULL,withwindow VARCHAR ( 5 ) NOT NULL,responsible_person VARCHAR ( 16 ) NOT NULL,status VARCHAR ( 12 ) NOT NULL,checkout_time date,customer_id VARCHAR ( 16 ) );CREATE TABLE IF NOT EXISTS employee (account VARCHAR ( 20 ) PRIMARY KEY, password VARCHAR ( 20 ) NOT NULL);ALTER TABLE customerADD FOREIGN KEY ( room_num ) REFERENCES room ( room_num ) ON DELETE SET NULL;ALTER TABLE room ADD FOREIGN KEY ( customer_id ) REFERENCES customer ( account ) ON DELETE SET NULL;");
+    db.setDatabaseName("hotel");
 
     ui->lineEdit_password->setEchoMode(QLineEdit::Password);