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Course2454

Course Introduction：This set of courses is based on the design concept and data structure of MySQL index, index usage scenarios, index classification, index usage scenarios, index performance analysis, query optimization, slow query of MySQL index, etc. It mainly describes the solution of MySQL index optimization. It is very suitable for students who have basic knowledge of MySQL or have certain work experience. The course explains how to solve the problem of slow large-volume queries, how to write an efficient SQL, how to optimize query statements, what is the implementation principle of indexes, how to optimize indexes... and many other difficulties and interview points in SQL index optimization.

MySQL query optimization solution [taught by architects from major manufacturers] [Getting Started with MySQL | Tuning | Indexing] Advanced Tutorial

Course5948

Course Introduction：How to tune SQL according to execution plan under massive data? How does the mysql index system cope with massive data storage? How to design a mysql index with excellent performance under massive data Full analysis of clustered index and non-clustered index of mysql Must-ask nouns in mysql index interview: table return, index coverage, leftmost matching How to optimize indexes for specific SQL scenarios

Front-end Vue3 actual combat [handwritten vue project]

Course2857

Course Introduction：Course introduction: 1. Cross-domain processing, token management, route interception; 2. Real interface debugging, API layer encapsulation; 3. Secondary encapsulation of Echarts and paging components; 4. Vue packaging optimization and answers to common problems.

APIPOST tutorial [Popularization of technical concepts related to network communication]

Course1795

Course Introduction：Apipost is an API R&D collaboration platform that integrates API design, API debugging, API documentation, and automated testing. It supports grpc, http, websocket, socketio, and socketjs type interface debugging, and supports privatized deployment. Before formally learning ApiPost, you must understand some related concepts, development models, and professional terminology. Apipost official website: https://www.apipost.cn

Issue 22_Comprehensive actual combat

Course5521

Course Introduction：(Consult WeChat: phpcn01) The comprehensive practical course aims to consolidate the learning results of the first two stages, achieve flexible application of front-end and PHP core knowledge points, complete your own projects through practical training, and provide guidance on online implementation. Comprehensive practical key practical courses include: social e-commerce system backend development, product management, payment/order management, customer management, distribution/coupon system design, the entire WeChat/Alipay payment process, Alibaba Cloud/Pagoda operation and maintenance, and project online operation. .....

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Implement filters and pagination using Laravel Eloquent
I'm trying to create an API that will return all customer records from a database. But this provides paging and filtering functionality. , the filter function is an optional query parameter. So it doesn't have to be included in the query parameters. But I'm having problems doing this. This is the index method in the CustomerController file: publicfunctionindex(Request$request){//Gethowmanyitemperpage$itemPerPage=$request-&
2023-11-12 18:42:35

How to use open primitive tag in next js 13?
In the recent NextJS13 update, they introduced a new way of handling meta tags that differs from the traditional method of creating a NextHead and writing the usual html meta tags. In the new method, we create a metadata object-like method. But I haven't found a way to use open graph metadata. exportconstmetadata={title:"thisisthetitleoftheweb",description:"thisisthe
2023-11-10 23:03:51

Composite full-text index in MySQL
I want the system to allow searching user messages by specific users. Suppose I have the following table createtablemessages(user_idint,messagenvarchar(500)); If I want to search all messages from user 1 that contain the word "foo", what index should I use here. Simple, non-unique index on user_id which will filter only specific user messages and then fully scan for specific words. Full-text index of messages. This will find all messages for all users and then filter them by ID. This seems to be the case when there are a large number of users.
2023-11-07 18:44:49

Nuxt 3 dynamic page changes URL but content remains the same and data is only fetched once
I have a products/index page and within the main product page I have products/[slug] and I have a NuxtLink to change the page and go to products/[slug] and get the data for that product. On the first click, I have the correct data, but when I click back or click on the product/index page and then try to click on another product, I have the first product I clicked on and the information for each product, I get again Information about the first product I clicked. Using console.log allowed me to discover that my fetching data was not
2023-11-03 14:39:04

Does field order matter in multi-column index in MySQL?
I know the importance of indexes and how join order changes performance. I've read a lot related to multi-column indexes but didn't find an answer to my question. I'm curious if the order in which they are specified matters if I do a multi-column index. My guess is no, and the engine will treat them as a group where the order doesn't matter. But I want to verify it. For example, from the mysql website (http://dev.mysql.com/doc/refman/5.0/en/multiple-column-indexes.ht
2023-10-21 22:05:44

MoreQ&A

Can search engines index JavaScript?

Course Introduction：JavaScript provides users with an intuitive, dynamic and interactive online experience. When scraping traditional HTML pages, everything is simple and the process is fast. Googlebot may access it simultaneously after downloading the HTML file and extracting the link to the source code. Once the CSS file is downloaded, the page will be indexed by Google's indexer, which also receives all downloaded resources. Things get challenging when scraping websites that primarily use JavaScript. Googlebot downloads HTML files. Googlebot doesn't see the links in the source code because they are only inserted after the JavaScript runs. Next, download the CSS and JS files. Google

2023-09-05 comment 0464

How to create a list indexed in roman numerals in HTML

Course Introduction：Overview Indexes are numbers that indicate the position or location of a sentence. In HTML, we can index in two ways: unordered list (ul) and ordered list (li). Use

2023-09-13 comment 0874

How to batch index DeDeCms V5.6 data into Taote search engine

Course Introduction：How to batch index DeDeCms data into Taote search engine: first run the Sql statement through Mysql; then back up the "makehtml_archives_action.php" file; then enter the background and select "HTML Update - Update Document HTML"; and finally batch update.

2019-12-20 comment 01889

Can html be imported into html?

Course Introduction：html can import html, the introduction method: 1. Use the iframe tag of HTML, the code is []; 2. Use the JS reference method, the code is [<object style=. .>].</p> <p class="course-classify article"><span>2021-03-03</span> <span>comment 0</span><span class="right"><i class="layui-icon"></i>7479</span></p> </div> </div> <div class="course-item"> <a href="//m.sbmmt.com" target="_blank" title="" class="course-img"><img src="https://img.php.cn/upload/article/000/887/227/168509027351550.png"></a> <div class="course-detail"> <a href="//m.sbmmt.com" target="_blank" title="What are clustered indexes, non-clustered indexes, joint indexes and unique indexes in MySQL" class="title">What are clustered indexes, non-clustered indexes, joint indexes and unique indexes in MySQL</a> <p class="course-">Course Introduction：1. Index type Index can be divided into B-Tree index and hash index according to the underlying implementation. Most of the time we use B-Tree index because its good performance and characteristics are more suitable for building high-concurrency systems. According to the storage method of the index, the index can be divided into clustered index and non-clustered index. The characteristic of a clustered index is that the leaf nodes contain complete record rows, while the leaf nodes of a non-clustered index only have all fields and primary key IDs. According to clustered index and non-clustered index, it can be further divided into ordinary index, covering index, unique index and joint index. 2. Clustered index and non-clustered index Clustered index is also called clustered index. It is not actually a separate index type, but a data storage method. The clustered index</p> <p class="course-classify article"><span>2023-05-26</span> <span>comment 0</span><span class="right"><i class="layui-icon"></i>1508</span></p> </div> </div> <div class="more"> <a href="//m.sbmmt.com/search/article?word=索引html">MoreTechnical Articles</a> </div> </div> </div> <div class="phpFoot"> <div class="phpFootIn"> <div class="phpFootCont"> <div class="phpFootLeft"> <dl> <dt> <a href="//m.sbmmt.com/about/us.html" rel="nofollow" target="_blank" title="About us" class="cBlack">About us</a> <a href="//m.sbmmt.com/about/disclaimer.html" rel="nofollow" target="_blank" title="Disclaimer" class="cBlack">Disclaimer</a> <a href="//m.sbmmt.com/update/article_0_1.html" target="_blank" title="Sitemap" class="cBlack">Sitemap</a> <div class="clear"></div> </dt> <dd class="cont1"> php.cn：Public welfare online PHP training，Help PHP learners grow quickly！ </dd> </dl> </div> </div> </div> </div> <input type="hidden" id="verifycode" value="/captcha.html"> </body> </html>