Question

我编译请求时遇到错误。

这是我的日志：android.database.sqlite.SQLiteException：near＆＃34; FROM＆＃34 ;:语法错误（代码1）:,同时编译：SELECT nom，prenom，numero，FROM Ichar WHERE id =？

这是我的MySQLite类的一部分似乎关注错误：

public Character getCharacterById(int Id) {

    SQLiteDatabase db = getWritableDatabase();
    String query = "SELECT  " +
            "nom" + "," +
            "prenom" + "," +
            "numero" + "," +
            " FROM  " + CHARACTER_TABLE
            + " WHERE  " +
            "id" + "=?";

    Character character = new Character();


    Cursor cursor = db.rawQuery(query, new String[]{String.valueOf(Id)});

    if (cursor.moveToFirst()) {
        do {
            character.character_Id = cursor.getInt(cursor.getColumnIndex("id"));
            character.nom = cursor.getString(cursor.getColumnIndex("nom"));
            character.prenom = cursor.getString(cursor.getColumnIndex("prenom"));
            character.numero = cursor.getString(cursor.getColumnIndex("numero"));

        } while (cursor.moveToNext());



    }
    cursor.close();
    db.close();
    return character;

你能帮助我吗？

谢谢。

Answer 1

"numero" + "," +

- ＆GT;

"numero" +

Answer 2

尝试像这样进行查询

 String query = "SELECT  " +
        "nom" + "," +
        "prenom" + "," +
        "numero" + 
        " FROM  " + CHARACTER_TABLE
        + " WHERE  " +
        "id" + "=?";

Answer 3

我认为问题在于，你有2个空格。

 SQLiteDatabase db = getWritableDatabase();
String query = "SELECT  " +
        "nom" + "," +
        "prenom" + "," +
        "numero" + "," +
        " FROM  " + CHARACTER_TABLE
        + " WHERE  " +
        "id" + "=?";

当你把＆＃34;来自＆＃34; + CHARACTER_TABLE白色空格使查询出错。

SQLiteException：near＆＃34; FROM＆＃34;：语法错误

3 个答案: