android - SQLite 中的错误

Question

我正在创建一个 SQLite，我在表中添加了 4 列，但是在添加第五列时找不到“productadd”。这里有什么问题？抱歉，我真的是 sqlite 新手

下面是我的 DatabaseHelper 类

   db.execSQL("CREATE TABLE if not exists producttable(id INTEGER PRIMARY KEY AUTOINCREMENT,"
                + " productidno"
                + " TEXT ,"
                + " productname"
                + " TEXT,"
                + " productprice" 
                + " TEXT,"
                + " productdest" 
                + " TEXT,"
                + " productadd"
                +" TEXT);");

我的日志猫：

 07-28 15:38:49.460: I/Database(382): sqlite returned: error code = 1, msg = table producttable has no column named productadd
07-28 15:38:49.492: E/Database(382): Error inserting productadd=hope productidno=this productdest=and productprice=me productname=is
07-28 15:38:49.492: E/Database(382): android.database.sqlite.SQLiteException: table producttable has no column named productadd: , while compiling: INSERT INTO producttable(productadd, productidno, productdest, productprice, productname) VALUES(?, ?, ?, ?, ?);
07-28 15:38:55.401: E/AndroidRuntime(382):  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3118)

Answer 1

这里缺少一个空格：

+ "productprice" 
   + "TEXT,"

改成 ：

+ "productprice " 
                + "TEXT,"

Answer 2

 db.execSQL("CREATE TABLE if not exists producttable(id INTEGER PRIMARY KEY AUTOINCREMENT,"
                + " productidno"
                + " TEXT ,"
                + " productname"
                + " TEXT,"
                + " productprice" 
                + " TEXT,"
                + " productdest"
                +" TEXT)");