Question

大家好我想为一个得分项目制作一个游戏数据库，在SQL Fiddle上测试它并继续得到这个错误说PlayerID没有默认值，但是这是自动递增所以我不明白为什么？任何帮助将不胜感激。

CREATE TABLE tblPlayer (
  PlayerID INT PRIMARY KEY AUTO_INCREMENT NOT NULL,
  UserName VARCHAR(50) NOT NULL,
  Password VARCHAR(50) NOT NULL,
  Email VARCHAR(100) NOT NULL,
  HighScore INT (50),
  AccountType BOOLEAN, 
  Status BOOLEAN,
  Country VARCHAR (50)
 );

CREATE TABLE tblGame (
  GameID INT AUTO_INCREMENT PRIMARY KEY NOT NULL,
  Timeleft DECIMAL NOT NULL
);

CREATE TABLE tblMap (
   MapID INT AUTO_INCREMENT PRIMARY KEY NOT NULL,
   GameID INT,
   MineLocationXY VARCHAR(10),
   OneLocationXY VARCHAR(10),
   TwoLocationXY VARCHAR(10),
   ThreeLocationXY VARCHAR(10),
   FOREIGN KEY (GameID) REFERENCES tblGame (GameID)
);

CREATE TABLE tblPlayerGame (
    PlayerID INT NOT NULL,
    GameID INT NOT NULL,
    PRIMARY KEY (PlayerID,GameID),
    PlayerOneScore INT(50),
    PlayerTwoScore INT(50),
    FOREIGN KEY (PlayerID) REFERENCES tblPlayer (PlayerID),
    FOREIGN KEY (GameID) REFERENCES tblGame (GameID)
    );

CREATE TABLE tblPlayerClick (
    PlayerID INT,
    LocationX VARCHAR (10),
    LocationY VARCHAR (10),
    FOREIGN KEY (PlayerID) REFERENCES tblPlayer (PlayerID)
);

INSERT INTO tblPlayer (UserName,Password,Email,AccountType,Status,Country)
 VALUES ('Geoff22','password2016','Geoff@Email.com',TRUE, TRUE, 'New Zealand'),
        ('Steve1','password','steve@Email.com',False, TRUE, 'USA')   
;

INSERT INTO tblGame (TimeLeft) 
VALUES (120), (120)
;

INSERT INTO tblMap (MineLocationXY,OneLocationXY,TwoLocationXY,ThreeLocationXY)
VALUES ('X2,Y3','X6,Y8','X9,Y1','X1,Y3')
;

INSERT INTO tblPlayerClick (LocationX,LocationY)
VALUES ('X1','Y2')
;

INSERT INTO tblPlayerGame (PlayerOneScore,PlayerTwoScore)
VALUES (22,19)
;

Answer 1

对于此insert：

INSERT INTO tblPlayerGame (PlayerOneScore,PlayerTwoScore)
    VALUES (22,19);

您没有PlayerId和GameId的值。这些声明为NOT NULL，没有默认值。

因此，您收到错误。

SQL没有默认值

1 个答案: