SQLite沒有這樣的列，即使一切拼寫正確，並且有正確的間距

Question

我正在學習android編程和sqlite在同一時間。我創建像一個表：

private static final String DATABASE_CREATE = "CREATE TABLE " + BOOK_TABLE + " (" 
     + BookContract._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " 
     + BookContract.TITLE + " TEXT NOT NULL, " 
     + BookContract.AUTHORS + " TEXT NOT NULL, " 
     + BookContract.ISBN + " TEXT NOT NULL, " 
     + BookContract.PRICE + " TEXT NOT NULL);"; 

在我的功能是獲取所有書籍在數據庫中，我的查詢是：

String query = "SELECT " + 
      BOOK_TABLE + "." + BookContract._ID + ", " + 
      BookContract.TITLE + ", " + 
      BookContract.PRICE + ", " + 
      BookContract.ISBN + ", " + 
      "GROUP_CONCAT(" + AuthorContract.NAME + ", ',') as " + BookContract.AUTHORS + 
      " FROM " + BOOK_TABLE + " LEFT OUTER JOIN " + AUTHOR_TABLE + " ON " + 
      BOOK_TABLE + "." + BookContract._ID + "=" + 
      AUTHOR_TABLE + "." + AuthorContract.BOOK_FOREIGN_KEY + 
      " GROUP BY " + BOOK_TABLE + "." + BookContract._ID + ", " + 
      BookContract.TITLE + ", " + BookContract.PRICE + ", " + BookContract.ISBN; 

這裏是字符串實際上看起來像在創建表：

CREATE TABLE bookTable (_id INTEGER PRIMARY KEY AUTOINCREMENT, title TEXT NOT NULL, authors TEXT NOT NULL, isbn TEXT NOT NULL, price TEXT NOT NULL); 

和查詢：

SELECT bookTable._id, title, price, isbn, GROUP_CONCAT(name, ',') as authors FROM bookTable LEFT OUTER JOIN authorTable ON bookTable._id = authorTable.book_fk GROUP BY bookTable._id, title, price, isbn 

我發誓我瘋了，因爲類似的stackOverflow職位要求類似的問題有輕微的拼寫錯誤或缺失的空間，但我的網上似乎工作正常sql simulator！

當我做一個database.rawQuery(query, null)，錯誤說，there is no such column: price appears in the log。

編輯：

有是有在評論中提到失蹤的名字列另一位作者表，在這裏是爲了清晰：

String AUTHOR_TABLE_CREATE = "CREATE TABLE " + AUTHOR_TABLE + " (" 
     + AuthorContract._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " 
     + AuthorContract.BOOK_FOREIGN_KEY + " INTEGER NOT NULL, " 
     + AuthorContract.NAME + " TEXT NOT NULL, " 
     + "FOREIGN KEY ("+ AuthorContract.BOOK_FOREIGN_KEY+") " + 
     "REFERENCES "+BOOK_TABLE+"("+BookContract._ID+") ON DELETE CASCADE);"; 

這給字符串：

CREATE TABLE authorTable (_id INTEGER PRIMARY KEY AUTOINCREMENT, book_fk INTEGER NOT NULL, name TEXT NOT NULL, FOREIGN KEY (book_fk) REFERENCES bookTable(_id) ON DELETE CASCADE); 

Answer 1

只需卸載您的應用程序從移動，然後重新運行。 我希望它能在代碼中沒有問題的情況下工作。