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--Under the sql2005, sql2000 can notCREATE TABLE TB (ID int,name varchar (4))Insert TB Select 1, ' AA 'UNION ALL Select 1, ' AA 'UNION ALL Select 2, ' BB 'UNION ALL select 3, ' BB 'UNION ALL Select 4, ' CC 'UNION ALL Select 1, ' AA 'UNION ALL Select 4, ' CC 'Delete a From(select Id,name,rn=row_number () over (partition by id,name order by ID) from TB) a where rn>1SELECT * FROM TBOriginal: http://blog.csdn.net/hzvcan/article/details/4862927SQL Server Data ded
Tags: mongodbRecently wrote a crawler tool, the data stored in the Web site MongoDB, because the data are duplicated, so I set up the database when the index, the following is my step, the set name is Drugitem,Here is the collection:I want to create a unique index for the name field because I want to ensure that name is not duplicated:In this way I run the program to find that the data is much less than the original set unique index, I carefully review the Discovery program in the Name field is
Business Requirements:A table has the Id,n1,n2,n3 field, which is a new empty table,Table B has id,n1,n2,n3,n4,n5 fields, such as old tables containing data,Now the record of the N1,N2,N3 combination in B table is re-imported into a table, and a table primary key is also entered valueScenario: The records of B table after the query to go to the weight, while the results of the records are numbered, the sequence number as a table to insert the ID value, SQL statement as follows:INSERT INTO A表(id,
April 8 " off, or not," ArcGIS Mobile's "offline integration" is there! "The Mobile Open class has ended, and the blog has given a specific answer to the concerns of the fans in the Open class. Questions and answers are mainly around the latest runtime SDKs, the use of the latest offline features, and the licensing of the new version number. For a lot of other details, please visit the public class Video: h
Comments: Today, our content is about how to create an offline web application. Its advantage is that it allows the browser to download our specified web resources so that users can use our site normally offline. Today, our content is about how to create an offline web application. Its advantage is that it allows the browser to download our specified web resource
HTML5 offline storage and HTML5 offline storage When a user is not connected to the Internet, the user can normally access the site or application and update the cached files on the user's machine when the user is connected to the Internet.Principle: HTML5 offline storage is based on a new one. the cache mechanism of appcache files (not the storage technology). B
Android offline download knowledge, android offline The offline download function is as follows:1. Download Management (START and cancel download ).2. Network judgment (wi-fi, 3G ).3. Independent process.4. timed and mobile phone reminders.5. self-starting. Select the core method for offline downloadWhen the backend ru
Offline Web application Manifest and offline webmanifest HTML5 adds the offline function. Assume there is an online note application. When the user's mobile phone is disconnected, he may be editing a note. Using the HTML5 offline Web application, you can edit the notes offline
How can I undo working offline? Many times due to occasional network instability, will appear to work offline prompts, people are very disgusted, then the browser to work offline How to cancel it? The following small series for everyone to bring IE offline work cancellation method, together to see it. In t
Html5 offline storage problem summary, html5 offline An important feature of HTML5 is offline storage. The so-called offline storage is to save some resource files locally, so that subsequent page reloading will use local resource files, you can continue to access web applications
Use. NET Core in offline environments and. netcore in offline environmentsUse. NET Core0x00 in offline environment to write at the beginning I have been paying close attention to. NET Core for a long time. Microsoft's previous impressions have become lightweight, open-source, and cross-platform. I plan to try it at work recently. However, the work is carried out
Tags: blog http io using ar strong for file dataDatabase Administrators can have any tablespace online (online) (accessible) or offline (offline) (inaccessible) in the open (open) State of the database in addition to the SYSTEM tablespace (tablespace). The SYSTEM table space is always online when the database is open (open), because Oracle needs to use the data dictionary in the dictionary.Table spaces (tab
Comments: Offline access is more and more important for network-based applications. Although all browsers have cache mechanisms, they are not reliable. HTML5 uses the ApplicationCache interface to solve some problems brought about by offline access, for more information, seeIntroduction Offline access is increasingly important for network-based applications. Alth
in archive modeOffline dropand theOfflineoffline DropDemo650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/89/52/wKiom1gPZHnS8wAPAAB-mitzFDU362.png-wh_500x0-wm_3 -wmp_4-s_4284970892.png "style=" Float:none; "title=" 1.png "alt=" Wkiom1gpzhns8wapaab-mitzfdu362.png-wh_50 "/>650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/89/50/wKioL1gPZHnQsC0iAABMAEVmlRA264.png-wh_500x0-wm_3 -wmp_4-s_2447878225.png "style=" Float:none; "title=" 2.png "alt=" Wkiol1gpzhnqsc0iaabmaevmlra264.png-wh
Offline downloads literally means I understand that computers are not networked and can be downloaded. Or the computer shuts down, it will automatically download to your system. At that time I did not understand the meaning of offline downloads, and I have never had the opportunity to download offline. Until later accidentally asked a friend, only to find
Ms Sheikh has long shared the Win10 method tips for offline installation of. NET Framework 3.5, while sharing the EXE format of the. NET Framework 3.5 offline installation package. However, some users reflect the installation process will appear error warning installation failure, then today, Ms Chief will share the CAB format of the. NET Framework 3.5 Offline in
In the setting of micro-letter offline receive QQ message we need in the micro-letter to the "QQ offline Assistant" function and enable it, open QQ offline Assistant can be set up after the micro-letter to accept offline QQ message. Micro-letter How to receive QQ offline me
Html5 offline cache details, html5 offline Cache Offline cache is one of the new Html5 features. It is easy to understand that after the first loading, data is cached. Without clearing the cache, data can be loaded without a network, web pages or games used for static data are relatively easy to use. Of course, none of Html5's new features are supported by all br
HTML5 offline cache Manifest, html5 offline manifest Web apps are no better than PCs, and there are performance and traffic considerations. Offline applications are becoming more and more important. Although browsers have cache mechanisms, they are often unreliable. What's more, html files cannot be cached in common cases, after the network is disconnected, every
Visual Studio Update 1 has been released for some time, Guole has tried several online upgrades, but the network is not power Ah, the results have failed. So always wanted to find the official VS2012 SP1 complete offline upgrade package, but did not find (because Microsoft provided the one called VS2012 Update 1, not like VS2010, called SP1). In other words, Microsoft does not offer a full offline upgrade p
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