ad ##项目中有什么错误？

Question

public Cursor readAllInfo(String name) {
    SQLiteDatabase db = getWritableDatabase();
    Cursor cursor= db.rawQuery("select * from "+TableName+" where "+col2 +"=\""+name+"\"",null);
    return cursor;
}

public boolean deleteInfo(String name) {
    SQLiteDatabase db = getWritableDatabase();
    int i = db.delete(TableName,col2+"=\""+name+"\"",null);
    if (i > 0) {
        return true;
    } else {
        return false;
    }
}