.net – SQLite与Microsoft Access MDB相比有多快？

发布时间：2020-12-12 19:10:39 所属栏目：百科来源：网络整理

导读：目前,我正在考虑通过SQlite数据库在单用户.NET C# Windows Forms应用程序上替换Microsoft Jet MDB数据库的用法. 我的目标是降低安装要求,如Jet驱动程序和Jet安装损坏时的一些令人讨厌的错误(我们现在有客户,然后报告这些错误). 关于表演的问题是：有没有任

目前,我正在考虑通过SQlite数据库在单用户.NET C# Windows Forms应用程序上替换Microsoft Jet MDB数据库的用法.

我的目标是降低安装要求,如Jet驱动程序和Jet安装损坏时的一些令人讨厌的错误(我们现在有客户,然后报告这些错误).

关于表演的问题是：

有没有任何性能基准测试比较MDB和SQLite在一组相当小的数据？

还是有任何开发者已经做了这个步骤,可以从自己的经验中讲出一些故事？

(我现在已经几个小时了,没有成功)

更新

虽然数据库不包含许多记录和表,但我认为性能仍然是一个问题,因为数据被频繁访问.

该应用程序是一个所谓的“桌面CMS系统”,用于呈现HTML页面;在渲染期间,正在访问相当多的数据,并且正在执行大量的SQL查询.

更新2

刚刚发现this documentation这表示一些速度比较,不幸的是不是与MDB,据我所知.

更新3

根据要求,一些数字：

>约.数据库中有30个表.
>大多数表的方式低于100条记录.
>约. 5个表,通常有几百个,几千个记录.
>一个大的MDB文件将是大约60 MB.

更新4

只是为了改写：我目前的MDB实现没有任何性能问题.在使用SQLite而不是MDB时,我正在问这个问题,以了解性能是否相等(或更好).

4年多以后,我实际上在MDB和SQLite之间做了一个小的(可能有点天真的)性能比较测试.

我还添加了更多的数据库.

我测试过的日期

> SQL Server Express 2014在同一本地PC和本地SSD驱动器上作为测试应用程序.
> SQL Server Express 2014在千兆网络中的服务器上.
> SQL Server Compact(CE)在同一本地PC和本地SSD驱动器上作为测试应用程序.
> Microsoft Access MDB / Jet在同一本地PC和本地SSD驱动器上作为测试应用程序.
> Microsoft SQLite在同一本地PC和本地SSD驱动器上作为测试应用程序.
> Microsoft VistaDB 5在同一本地PC和本地SSD驱动器上作为测试应用程序.

自some databases do not support connection pooling以来,我做了两个测试：

>通过一个使用块尽快关闭连接的一个测试.
>另一个测试,始终打开连接到每个数据库,为整个应用程序的生命周期

在立即关闭连接时测试结果

>本地运行的SQL Express是最快的.
>本地网络上的SQL Express处于第二位.
> SQL Compact Edition(CE)比SQLite和Jet / MDB快得多.
> Jet / MDB比SQLite快一点,比SQL CE慢得多.
> SQLite比Jet / MDB慢一点点.
> VistaDB 5是我测试中最慢的数据库.

保持连接打开时测试结果

结果与立即关闭连接时的结果相似.

相对来说,从最快到最慢的顺序没有改变.一些没有实际连接池的数据库提高了它们的绝对性能.

详细输出我的test application,立即关闭连接

1.: 1 x DELETE FROM Tabelle1 (Closing connections):
- SQL Express local : 00:00:00.1723705
- SQL Express remote: 00:00:00.2093229
- SQL CE            : 00:00:00.3141897
- MS Access         : 00:00:00.3854029
- SQLite            : 00:00:00.4639365
- VistaDB           : 00:00:00.9699047

2.: 1 x INSERT INTO Tabelle1 (Name1,Wert1) VALUES ({LOOPCTR},'{LOOPCTR}') (Closing connections):
- SQL Express local : 00:00:00.0039836
- SQL Express remote: 00:00:00.0062002
- SQL CE            : 00:00:00.0432679
- MS Access         : 00:00:00.0817834
- SQLite            : 00:00:00.0933030
- VistaDB           : 00:00:00.1200426

3.: 10 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (Closing connections):
- SQL Express local : 00:00:00.0031593
- SQL Express remote: 00:00:00.0142514
- SQL CE            : 00:00:00.3724224
- MS Access         : 00:00:00.7474003
- SQLite            : 00:00:00.8818905
- VistaDB           : 00:00:00.9342783

4.: 100 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (Closing connections):
- SQL Express local : 00:00:00.0242817
- SQL Express remote: 00:00:00.1124771
- SQL CE            : 00:00:03.6239390
- MS Access         : 00:00:07.3752378
- SQLite            : 00:00:08.6489843
- VistaDB           : 00:00:09.0933903

5.: 1000 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (Closing connections):
- SQL Express local : 00:00:00.2735537
- SQL Express remote: 00:00:01.2657006
- SQL CE            : 00:00:36.2335727
- MS Access         : 00:01:13.8782439
- SQLite            : 00:01:27.1783328
- VistaDB           : 00:01:32.0760340

6.: 1 x SELECT * FROM Tabelle1 (Closing connections):
- SQL Express local : 00:00:00.0520670
- SQL Express remote: 00:00:00.0570562
- SQL CE            : 00:00:00.1026963
- MS Access         : 00:00:00.1646635
- SQLite            : 00:00:00.1785981
- VistaDB           : 00:00:00.2311263

7.: 10 x SELECT * FROM Tabelle1 (Closing connections):
- SQL Express local : 00:00:00.0183055
- SQL Express remote: 00:00:00.0501115
- SQL CE            : 00:00:00.3235680
- MS Access         : 00:00:00.7119203
- SQLite            : 00:00:00.7533361
- VistaDB           : 00:00:00.9804508

8.: 100 x SELECT * FROM Tabelle1 (Closing connections):
- SQL Express local : 00:00:00.1787837
- SQL Express remote: 00:00:00.4321814
- SQL CE            : 00:00:03.0401779
- MS Access         : 00:00:06.8338598
- SQLite            : 00:00:07.2000139
- VistaDB           : 00:00:09.1889217

9.: 1000 x SELECT * FROM Tabelle1 (Closing connections):
- SQL Express local : 00:00:01.6112566
- SQL Express remote: 00:00:03.9542611
- SQL CE            : 00:00:29.1209991
- MS Access         : 00:01:07.2309769
- SQLite            : 00:01:10.3167922
- VistaDB           : 00:01:31.4312770

10.: 1 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:00.0029406
- SQL Express remote: 00:00:00.0088138
- SQL CE            : 00:00:00.0498847
- MS Access         : 00:00:00.0893892
- SQLite            : 00:00:00.0929506
- VistaDB           : 00:00:00.2575795

11.: 10 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:00.0174026
- SQL Express remote: 00:00:00.0400797
- SQL CE            : 00:00:00.3408818
- MS Access         : 00:00:00.7314978
- SQLite            : 00:00:00.7653330
- VistaDB           : 00:00:01.9565675

12.: 100 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:00.1565402
- SQL Express remote: 00:00:00.3787208
- SQL CE            : 00:00:03.3516629
- MS Access         : 00:00:07.2521126
- SQLite            : 00:00:07.5618047
- VistaDB           : 00:00:19.5181391

13.: 1000 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:01.5686470
- SQL Express remote: 00:00:03.7414669
- SQL CE            : 00:00:35.3944204
- MS Access         : 00:01:14.6872377
- SQLite            : 00:01:17.9964955
- VistaDB           : 00:03:18.1902279

14.: 1 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:00.0053295
- SQL Express remote: 00:00:00.0089722
- SQL CE            : 00:00:00.0395485
- MS Access         : 00:00:00.0797776
- SQLite            : 00:00:00.0833477
- VistaDB           : 00:00:00.2554930

15.: 10 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:00.0168467
- SQL Express remote: 00:00:00.0552233
- SQL CE            : 00:00:00.3929877
- MS Access         : 00:00:00.7886399
- SQLite            : 00:00:00.8209904
- VistaDB           : 00:00:02.1248734

16.: 100 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:00.1705345
- SQL Express remote: 00:00:00.3969228
- SQL CE            : 00:00:03.4886826
- MS Access         : 00:00:07.4564258
- SQLite            : 00:00:07.7828646
- VistaDB           : 00:00:20.4092926

17.: 1000 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (Closing connections):
- SQL Express local : 00:00:01.6237424
- SQL Express remote: 00:00:03.9816212
- SQL CE            : 00:00:35.1441759
- MS Access         : 00:01:14.7739758
- SQLite            : 00:01:17.9477049
- VistaDB           : 00:03:24.0049633

保持连接打开时,我的test application的详细输出

1.: 1 x DELETE FROM Tabelle1 (keeping connection open):
- SQL Express local : 00:00:00.0426930
- SQL Express remote: 00:00:00.0546357
- SQL CE            : 00:00:00.0786765
- MS Access         : 00:00:00.0909099
- SQLite            : 00:00:00.1101572
- VistaDB           : 00:00:00.4637726

2.: 1 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (keeping connection open):
- SQL Express local : 00:00:00.0030936
- SQL Express remote: 00:00:00.0051136
- SQL CE            : 00:00:00.0054226
- MS Access         : 00:00:00.0074847
- SQLite            : 00:00:00.0154474
- VistaDB           : 00:00:00.0373701

3.: 10 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (keeping connection open):
- SQL Express local : 00:00:00.0023271
- SQL Express remote: 00:00:00.0109913
- SQL CE            : 00:00:00.0119872
- MS Access         : 00:00:00.0152531
- SQLite            : 00:00:00.1131698
- VistaDB           : 00:00:00.1261859

4.: 100 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (keeping connection open):
- SQL Express local : 00:00:00.0201695
- SQL Express remote: 00:00:00.0888872
- SQL CE            : 00:00:00.0966017
- MS Access         : 00:00:00.1256167
- SQLite            : 00:00:01.3632978
- VistaDB           : 00:00:01.9422151

5.: 1000 x INSERT INTO Tabelle1 (Name1,'{LOOPCTR}') (keeping connection open):
- SQL Express local : 00:00:00.1693362
- SQL Express remote: 00:00:00.9181297
- SQL CE            : 00:00:01.0366334
- MS Access         : 00:00:01.2794199
- SQLite            : 00:00:13.9398816
- VistaDB           : 00:00:19.8319476

6.: 1 x SELECT * FROM Tabelle1 (keeping connection open):
- SQL Express local : 00:00:00.0481500
- SQL Express remote: 00:00:00.0507066
- SQL CE            : 00:00:00.0738698
- MS Access         : 00:00:00.0911707
- SQLite            : 00:00:00.1012425
- VistaDB           : 00:00:00.1515495

7.: 10 x SELECT * FROM Tabelle1 (keeping connection open):
- SQL Express local : 00:00:00.0157947
- SQL Express remote: 00:00:00.0692206
- SQL CE            : 00:00:00.0898558
- MS Access         : 00:00:00.1196514
- SQLite            : 00:00:00.1400944
- VistaDB           : 00:00:00.3227485

8.: 100 x SELECT * FROM Tabelle1 (keeping connection open):
- SQL Express local : 00:00:00.1517498
- SQL Express remote: 00:00:00.3399897
- SQL CE            : 00:00:00.5497382
- MS Access         : 00:00:00.8619646
- SQLite            : 00:00:01.0463369
- VistaDB           : 00:00:02.8607334

9.: 1000 x SELECT * FROM Tabelle1 (keeping connection open):
- SQL Express local : 00:00:01.5042900
- SQL Express remote: 00:00:03.8431985
- SQL CE            : 00:00:05.9075477
- MS Access         : 00:00:09.2642402
- SQLite            : 00:00:11.4427914
- VistaDB           : 00:00:30.8470936

10.: 1 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:00.0033803
- SQL Express remote: 00:00:00.0062499
- SQL CE            : 00:00:00.0141105
- MS Access         : 00:00:00.0188573
- SQLite            : 00:00:00.0208236
- VistaDB           : 00:00:00.1796513

11.: 10 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:00.0168644
- SQL Express remote: 00:00:00.0377185
- SQL CE            : 00:00:00.1121558
- MS Access         : 00:00:00.1599104
- SQLite            : 00:00:00.1799435
- VistaDB           : 00:00:01.4042534

12.: 100 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:00.1547275
- SQL Express remote: 00:00:00.3692526
- SQL CE            : 00:00:01.1215470
- MS Access         : 00:00:01.5577172
- SQLite            : 00:00:01.7519790
- VistaDB           : 00:00:14.5687575

13.: 1000 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:01.4992800
- SQL Express remote: 00:00:03.7601806
- SQL CE            : 00:00:11.1738426
- MS Access         : 00:00:15.8112902
- SQLite            : 00:00:17.8045042
- VistaDB           : 00:02:21.4492368

14.: 1 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:00.0048145
- SQL Express remote: 00:00:00.0076790
- SQL CE            : 00:00:00.0152074
- MS Access         : 00:00:00.0204568
- SQLite            : 00:00:00.0229056
- VistaDB           : 00:00:00.2091614

15.: 10 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:00.0156564
- SQL Express remote: 00:00:00.0377571
- SQL CE            : 00:00:00.1138433
- MS Access         : 00:00:00.1598932
- SQLite            : 00:00:00.1793267
- VistaDB           : 00:00:01.4667061

16.: 100 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:00.1512625
- SQL Express remote: 00:00:00.4658652
- SQL CE            : 00:00:01.2441809
- MS Access         : 00:00:01.7224126
- SQLite            : 00:00:01.9297231
- VistaDB           : 00:00:14.9351318

17.: 1000 x SELECT a.* FROM Tabelle1 a LEFT JOIN Tabelle1 b ON a.ID=b.ID WHERE a.ID < 100 OR a.ID > 300 ORDER BY a.ID (keeping connection open):
- SQL Express local : 00:00:01.5223833
- SQL Express remote: 00:00:03.9885174
- SQL CE            : 00:00:11.8356048
- MS Access         : 00:00:16.5977939
- SQLite            : 00:00:18.6504260
- VistaDB           : 00:02:26.0513056

（编辑：李大同）

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