如何在 flutter 中从 sqlite 获取最后一个条目？

Question

我在SO中看到了很多答案，但都与android有关。

我想获取最后输入的ID table.This是我的用户table:

await db.execute("CREATE TABLE User("
          "userId INTEGER PRIMARY KEY,"
          "first_name TEXT,"
          "last_name TEXT,"
          "user_password TEXT,"
          "mobile_no TEXT,"
          "email_id TEXT," 
          ")");
    print("User Table created");

Answer 1

final database = await db;
final data = await database.rawQuery('SELECT * FROM User');
final lastId = data.last['userId'];

Answer 2

您可以使用 Order by 和 Limit 关键字。我现在无法自行测试，但 google 表示 sqflite 支持它们。应该看起来像这样：

db.rawQuery("SELECT * FROM $table ORDER BY userId DESC LIMIT 1");

或者像这样：

 db.query(
      dbTable, 
      orderBy: "userId DESC",
      limit: 1
    );

如何在 flutter 中从 sqlite 获取最后一个条目？

How to get last entry from sqlite in flutter?

flutter

sqflite