Select Latest Date Sql

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Mysql sql statement in the group by and order by comparison

I now need to remove the latest content from each category as follows: select * from test group by category_id order by `date` The result is as follows. This is not the data I want, because msyql has the order of execution is the order of reference write: select ... from ... where .... group by ... having ... order by .. Execution order: ...

Java Development 2.0: Implementing REST through CouchDB and Groovy restclient

In the past few years, the innovative development of the open source world has elevated the productivity of Java™ developers to one level. Free tools, frameworks and solutions make up for once-scarce vacancies. The Apache CouchDB, which some people think is a WEB 2.0 database, is very promising. It's not difficult to master CouchDB, it's as simple as using a Web browser. This issue of Java open ...

Open source Cloud Computing Technology Series (iv) (Cloudera experience)

Cloudera's location is bringing big Data to the Enterprise with Hadoop Cloudera in order to standardize the configuration of Hadoop, you can help the enterprise install, configure, Run Hadoop to achieve large-scale enterprise data processing and analysis. Since it is for enterprise use, Cloudera's software configuration is not to use the latest Hadoop 0.20, but the use of Hadoop 0.18.3-12.clou ...

Solutions with large data technology and Hadoop

Machine data may have many different formats and volumes. Weather sensors, health trackers, and even air-conditioning devices generate large amounts of data that require a large data solution. &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; However, how do you determine what data is important and how much of that information is valid, Is it worth being included in the report or will it help detect alert conditions? This article will introduce you to a large number of machine datasets ...

Restore MySQL database using MySQL Workbench graphical backup

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host Technology Hall This article briefly introduces a simple and easy to use graphical interface backup restore MySQL database method, Use the workbench graphical interface for MySQL database recovery backup.   It's helpful to friends who don't like to use the command line. Workbench is MySQL AB ...

Azure Services Discovery-Storage table (table) storage

This series of articles is a learning record about the fundamentals of azure services development, and because of time constraints, the process of wishing to discuss and explore yourself is from scratch, to be able to develop basic programming for azure services. There may be a very deep topic relative to each topic, and I would like to have time to do it through other articles.   The positioning of this series is basically positioning, take 20-30 minutes, download the code first, follow the article, run to get the relevant experience. The previous article is about Azure queue storage, this is about ...

A large collection of ways to invoke forum posts by weaving dream dedecms

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall today I tell you some in the dream dedecms inside call Discuz forum post Some methods, these methods are not easy to search from the Internet, this time dedicated to everyone. The first thing to note is that the following code has table= "Cdb_threads" this sentence. This sentence is not applicable to all nets ...

Enhancements to Windows Azure Management Portal Detail Description

Over the past three weeks, we have released a series of enhancements to the new Windows http://www.aliyun.com/zixun/aggregation/13357.html ">azure Management portal." These new features include: Support for localization support in 6 languages the operations log supports SQL database metrics virtual machine enhancements (quickly creating windows+ Linux virtual Machines) enhancements to the Web site (support for creating sites in all areas, personal github ...)

Practical techniques for Web-Dedicated server security (1)

Related Settings for IIS: Delete the default site's virtual directory, stop the default Web site, delete the corresponding file directory c:inetpub, configure the public settings for all sites, set the associated number of connections, bandwidth settings, and other settings such as performance settings. Configures application mappings, removes all unnecessary application extensions, and retains only asp,php,cgi,pl,aspx application extensions. For PHP and CGI, it is recommended to use ISAPI parsing and EXE parsing to have an impact on security and performance. User program debug Settings send ...

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