SQLite异常 - 创建表

Question

我得到一个异常，我只是不知道为什么它被抛出。当我添加表消息时出现异常。请看一下，看看我错过了一个错误。提前致谢。

例外：

Caused by: android.database.sqlite.SQLiteException: near "From": syntax error (code 1): , while compiling: CREATE TABLE Messages (UniqueId TEXT PRIMARY KEY,From TEXT,To TEXT,Subject TEXT,Body TEXT,HandledOn TEXT,IsRead INTEGER,CreatedOn TEXT,UpdatedOn TEXT,DeletedOn TEXT); 

声明从而导致该异常，在SQLiteOpenHelper：

@Override 
public void onCreate(android.database.sqlite.SQLiteDatabase db) { 
    String CREATE_MESSAGES_TABLE = 
      "CREATE TABLE " + TABLE_MESSAGES + "(" 
        + COLUMN_UNIQUEID + " TEXT PRIMARY KEY," 
        + COLUMN_FROM + " TEXT," 
        + COLUMN_TO + " TEXT," 
        + COLUMN_SUBJECT + " TEXT," 
        + COLUMN_BODY + " TEXT," 
        + COLUMN_HANDLEDON + " TEXT," 
        + COLUMN_ISREAD + " INTEGER," 
        + COLUMN_CREATEDON + " TEXT," 
        + COLUMN_UPDATEDON + " TEXT," 
        + COLUMN_DELETEDON + " TEXT" 
        + ");"; 

    String CREATE_CONTACTS_TABLE = 
      "CREATE TABLE " + TABLE_CONTACTS + "(" 
        + COLUMN_UNIQUEID + " TEXT PRIMARY KEY," 
        + COLUMN_NAME + " TEXT," 
        + COLUMN_EMAIL + " TEXT," 
        + COLUMN_CREATEDON + " TEXT," 
        + COLUMN_UPDATEDON + " TEXT," 
        + COLUMN_DELETEDON + " TEXT" 
        + ");"; 

    db.execSQL(CREATE_MESSAGES_TABLE); 
    db.execSQL(CREATE_CONTACTS_TABLE); 
} 

Answer 1

您正在使用受保护的关键字，如“从”和“到”作为表名，这是不允许的SQLite中：

https://www.sqlite.org/lang_keywords.html