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It is well known that query optimization is an unavoidable topic in any database. For database engineers, optimization is the most challenging job. MySQL Open source database is no exception. In fact, the author believes that the database optimization is not as much as we imagine the suffering. 　　Under normal circumstances, you can start from the following four details to do a good job in the MySQL database query optimization. First, use the Explain keyword to evaluate the flaw in the query statement as shown in the following figure, now the author in the database to execute a simple select ...

The core concept of sub-library table is based on MySQL storage. Solving the problem of data storage and access capacity, the product supports the database traffic of previous Tmall double eleven singles day core transaction links, and gradually grew into the standard of Alibaba Group access relational database.

The intermediary transaction SEO diagnose Taobao guest Cloud host technology Hall as an SEO practitioner needs to know the knowledge is too broad, yesterday I also share with you "stationmaster transforms into search engine optimization Master Road", whether is the grassroots stationmaster or the optimization master, but all with website construction, search engine optimization, Search engine marketing and so on are related to need them to understand. A lot of webmaster for search engine is not very understanding, want to fully understand and grasp search engine pulse also need to know search engine basic Query command, these commands can let you to search engine's ...

The intermediary transaction SEO diagnose Taobao guest Cloud host Technology Hall This is the new year after the first post, say really, I also do not know which aspect of the article to write, and then think about it, as a common Webmaster query tool site to share out, give you a brief introduction. 　　In fact, these sites are familiar to everyone, but everyone's understanding of these sites and views have certain differences. Webmaster Helper Webmaster Helper, as a professional webmaster inquiries site, the development of webmaster and internet staff commonly used some query tools, such as the website ...

Absrtact: We open the search engine, we can see the interface of the search engine is very simple, when the user input query words, search engine returned search results, the process seems simple, but some of the process behind it is very complex. User input every time we open the search engine, you can see the search engine interface is very simple, when the user input query words, search engine returned search results, the process seems simple, but some of the process behind it is very complex. Each word that the user enters hides behind quiet its deeper query intent, which often requires ...

Intermediary trading http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology lobby to do site SEO, the importance of the chain of the site beyond doubt." 　　It is because the chain of the site's SEO impact is very large, so Baidu Webmaster platform the latest announced by the Green Luo algorithm, will increase the illegal chain to deal with the crackdown. Formerly in the industry most commonly used is the Yahoo outside the chain inquiry tool, can inquire a website specific ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall the day before yesterday with you share about Baidu query outside the chain of the article" Analysis of Baidu Domain inaccuracy ", Inside mentioned, because Baidu domain inaccurate, a lot of webmaster use Yahoo query outside the chain method, but last November, Yahoo closed the query outside the chain function, a lot of webmaster are overwhelmed ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall all stationmaster likes to use tool to inquire the data of the website, because convenient, also may feel the data is good, Meet your own little vanity, but does the data given by the tool really make any difference? Is it really that way? Do you have to observe, after a period of observation I found a lot of problems, below we come to fine ...

QOF (Query Object framework) &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; is a query-like framework, Provides a set of C-language utilities for performing a complex query of data that is held by a set of C++/c++ objects. The framework is unique, it does not require SQL or any database execution queries, programmers do not need to hook up to a SQL database query ...

In the development of friends especially and MySQL have contact friends will encounter sometimes MySQL query is very slow, of course, I refer to the large amount of data millions level, not dozens of, the following we take a look at the resolution of the query slow way. -Often find developers looking up statements that are not indexed or limit n, which can have a significant impact on the database, such as a large table of tens of millions of records to scan all, or do filesort, and the database and server IO impact. This is the case above the mirrored library. And ...