从 SQLite for java/android 中的数据库表中删除除 top n 之外的所有内容答案

【问题标题】：Delete all but top n from database table in SQLite for java/android从 SQLite for java/android 中的数据库表中删除除 top n 之外的所有内容
【发布时间】：2015-10-15 15:37:50
【问题描述】：

我是 java 新手，但我正在尝试编码：

      SQLiteDatabase db = this.getWritableDatabase();
        //db.execSQL("delete from " + TABLE_BOOKMARKS + " where " + KEY_ID + "  not in (select " + KEY_ID + " from " + TABLE_BOOKMARKS + " order by " + KEY_ID + " limit 10)" );
        //db.execSQL("DELETE FROM " + TABLE_BOOKMARKS + " WHERE " + KEY_ID + " NOT IN (SELECT TOP 10 " + KEY_ID + " FROM " + TABLE_BOOKMARKS + ")" );

        db.execSQL("Delete From "+TABLE_BOOKMARKS+"  where "+ KEY_ID  + " not in (Select Top 10 "+ KEY_ID +" from "+ TABLE_BOOKMARKS + " order by " + KEY_ID +")");
        db.close(); // Closing database connection

您可以在代码中看到，我尝试了 3 种不同的方式，但是当我运行它时，我的应用程序返回错误并停止！

我收到了这个错误：

android.database.sqlite.SQLiteException：接近“10”：语法错误：，编译时：从 id 不在的书签中删除（选择前 10 书签中的 id 按 id 排序）

【问题讨论】：

stackoverflow.com/questions/2728999/…

标签： java android sql sqlite

【解决方案1】：

你可以试试

db.execSQL("Delete From "+TABLE_BOOKMARKS+"  where "+ KEY_ID  + " not in (Select "+ KEY_ID +" from "+ TABLE_BOOKMARKS + " order by " + KEY_ID +" limit 10)");

【讨论】：