为什么自己创建SQLite数据库rowid？ Android

Question

有没有办法创建一个没有AUTOINCREMENT列的表？

我试过这个链接的解决方案，但它没有为我工作。 prevent autoincrementing integer primary key?

public static final String KEY_ID = "ROW_ID";     
public static final String BOOK = "books";  
public static final String CAR  = "cars"; 
private static final String BOOK_CAR_TABLE = "BOOK_CAR_Table"; 
private static final String[] ALL_KEYS = new String[] {KEY_ID, BOOK, CAR}; 

private static final String BOOK_CAR_CREATE =   
"CREATE TABLE " + BOOK_CAR_TABLE + "("+ 
           KEY_ID + " INTEGER PRIMARY KEY," + 
           BOOK + " TEXT," + 
           CAR + " TEXT)"; 

我明白，当我添加INTEGER PRIMARY KEY，它会变成KEY_ID到自动增量列。

public static final String KEY_ID = "ROW_ID";     
public static final String BOOK = "books";  
public static final String CAR  = "cars"; 
private static final String BOOK_CAR_TABLE = "BOOK_CAR_Table"; 
private static final String[] ALL_KEYS = new String[] {KEY_ID, BOOK, CAR}; 

private static final String BOOK_CAR_CREATE =   
"CREATE TABLE " + BOOK_CAR_TABLE + "("+ 
           KEY_ID + " INTEGER," + 
           BOOK + " TEXT," + 
           CAR + " TEXT)"; 

的AUTOINCREMENT ROWID列是由本身产生的，它是怎么发生的?????

我不想要这个AUTOINCREMENT列。

我该如何预防？

谢谢

编辑：添加代码

private static final String BOOK_CAR_CREATE =   
"CREATE TABLE " + BOOK_CAR_TABLE + "("+ 
           KEY_ID + " INTEGER," + 
           BOOK + " TEXT," + 
           CAR + " TEXT) WITHOUT ROWID"; 

我已经试过这样做，它是强制关闭。我想这是因为SQLite版本？

Answer 1

您可以指定WITHOUT ROWID，但您仍然需要PRIMARY KEY。

例如：

CREATE TABLE "table"("key" TEXT PRIMARY KEY, "value" TEXT) WITHOUT ROWID 

这需要源码3.8.2或更新的版本。这个问题也被标记为android-sqlite，所以有可能the sqlite version on your Android device年龄较大。

扩展阅读：http://www.sqlite.org/withoutrowid.html