表[表名]没有列名为[列名]

Question

我的SQLite数据库只有两列在开始（ID和名称），现在我又增加了两个：DURATION和DATE。

看来我错过了一些东西，因为现在每当我尝试写入数据库时​​，它都会给我提供标题中的错误提示。

这里的logcat的输出：

02-20 12:25:06.475: E/SQLiteLog(4907): (1) table music has no column named duration 
02-20 12:25:06.479: E/SQLiteDatabase(4907): Error inserting duration=0 date=20.2. name=blahblah 
02-20 12:25:06.479: E/SQLiteDatabase(4907): android.database.sqlite.SQLiteException: table music has no column named duration (code 1): , while compiling: INSERT INTO music(duration,date,name) VALUES (?,?,?) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at com.matejhacin.beautifulvoicerecorder.database.DatabaseHandler.newSound(DatabaseHandler.java:32) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at com.matejhacin.beautifulvoicerecorder.RecordFragment$4.onClick(RecordFragment.java:198) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:166) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.os.Handler.dispatchMessage(Handler.java:99) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.os.Looper.loop(Looper.java:137) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at android.app.ActivityThread.main(ActivityThread.java:5103) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at java.lang.reflect.Method.invoke(Method.java:525) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
02-20 12:25:06.479: E/SQLiteDatabase(4907):  at dalvik.system.NativeStart.main(Native Method) 

表查询：

String music_query = 
     "CREATE TABLE " + MUSIC_TABLE_NAME + " (" 
     + MUSIC_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " 
     + MUSIC_NAME + " TEXT" 
     + MUSIC_DURATION + " TEXT" 
     + MUSIC_DATE + " TEXT" 
     + ");"; 

功能用于将数据添加到表：

public int newSound(String name, String duration, String date){ 
    ContentValues cv = new ContentValues(); 
    cv.put(SQLiteHelper.MUSIC_NAME, name); 
    cv.put(SQLiteHelper.MUSIC_DURATION, duration); 
    cv.put(SQLiteHelper.MUSIC_DATE, date); 
    open(); 
    return (int)db.insert(SQLiteHelper.MUSIC_TABLE_NAME, null, cv); 
} 

我没有忘记递增DATABASE_VERSION变量。我甚至尝试彻底重新安装应用程序。

Answer 1

问题你忘了将它放在两栏之间的广告comma。

Like + MUSIC_NAME + " TEXT"应该是+ MUSIC_NAME + " TEXT,"。

---

所以你music_query字符串应该是

String music_query = 
     "CREATE TABLE " + MUSIC_TABLE_NAME + " (" 
     + MUSIC_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " 
     + MUSIC_NAME + " TEXT, " // Need comma here 
     + MUSIC_DURATION + " TEXT, " // Need comma here 
     + MUSIC_DATE + " TEXT " // Need not comma here, because this is last column of table 
     + ");";