How can I reformulate this query without using the AS keyword?

I'm completing a HackerRank challenge, but the documentation says I shouldn't use the AS keyword: I need to rewrite this query in MySQL so that it doesn't include AS in WITHAAS, nor ASWITHAAS in SELECT...AStest(SELECTDISTINCTMAX( LENGTH(customer_id))AStestFROMordersUNIONSELECTDISTINCTMIN(LENGTH(cust...

P粉765570115 2024-01-16 20:23:51 0  1  422

The importance of algorithms to phper? How important is it? We sincerely invite PHPer to discuss it.

The importance of algorithms to phper? How important is it? We sincerely invite PHPer to discuss it.

..... 2018-07-05 15:17:08 0  2  1764

mysql - Is it necessary to set a separate column as the primary key for the intermediate relational table in the database?

For example, the common role-user association table between roles and users has the following fields: role_iduser_id. When there are these two fields, is it necessary to set up a separate column of id as the primary key?

phpcn_u1582 2017-06-22 11:54:41 0  4  1155

Regular expression - PHP regular expression determines whether there are specified keywords in a and img tags

What I want to implement is the keyword replacement function. a, img contains keywords and cannot be replaced. If [Example] is a keyword, the keyword appears in these three situations and cannot be replaced, otherwise it will destroy the html structure {code...} I wrote a crappy function. It doesn't...

欧阳克 2017-06-21 10:10:32 0  1  1244

php - Colleagues, please share your design ideas.

I want to make such a backend, and the requirements are: 1. Make a backend that adds keywords. . There are various categories and permission management. . . 2. Add a keyword with associated voice, associated answers, associated videos, animations and other learning resources. For example: I want to ...

我想大声告诉你 2017-06-26 10:49:03 0  1  804

USE keyword

After the use keyword is introduced into a class, can the attributes of this class be directly called?

玉簟秋 2020-01-07 10:38:29 0  1  1382

javascript - Is there any plug-in related to text highlighting in the input box? Can you recommend it?

To do a keyword search function

迷茫 2017-05-19 10:16:27 0  1  641

javascript - How to control model switch using antd model in react

How to use antd model in react to control the model switch parent primary key component passed in attribute {code...} advSimpleInfoModel parent component state object {code...} child primary key {code...} child component attribute changes the incoming value but Pop-up windows cannot appear {code...}

给我你的怀抱 2017-06-05 11:11:44 0  2  990

Bro, please help me

$keywords = "Keyword 1, Keyword 3, Keyword 2" $body = "This is a piece of content, there will be html code in the content" Now we need to randomly select a value from $keywords and insert it into $body randomly. I tried it myself and it inserted it into the html tag. How can I av...

2020-09-20 12:23:48 0  1  1077

Fuzzy query implements a sorting

The two conditions of fuzzy query are the title and the data found from the content. The data that satisfies the keywords in the title must be displayed first, and then the data with keywords in the displayed content must be displayed first.

懒货 2020-09-16 08:46:47 0  1  954

php - A question about google search

Using PHP to create a search function can be understood as a simple global keyword search [which does not involve any word delimitation or intelligent recognition]. For example, if I want to search for the keyword "", I want to add "simultaneously" under the search box. Display B...

淡淡烟草味 2017-05-24 11:30:43 0  1  667

Java thread monitoring, thread restart, observer mode issues

Regarding the issue of thread monitoring restart, I read http://www.cnblogs.com/ae6623... The observer pattern introduced in this article I think puts the key code for restarting the thread into the catch block in the thread body. What should I do if the exception is not caught? I don’t know much ab...

天蓬老师 2017-05-27 17:41:04 0  2  780

javascript - I would like to know how to implement the automatic rotation and folding part of this web page.

1. The website address is this: http://baozhuang.yundayang.co... 2. Do I need to use plug-ins for the folding part? 3. What are the key points when writing it yourself?

巴扎黑 2017-05-16 13:25:45 0  2  637

Vue 3 composition api - computed property returns undefined

Using the Vue3 composition API, how to return the calculated value of the property firstDigit? The keyword this in the computed property is undefined but when I exclude this I get the error fourDigitsisnotDefined. <scriptsetup>import{computed,reactive}from'vue'consstinput=reactive({fourDigits:...

P粉662089521 2023-10-31 19:00:10 0  2  627

java - Is it necessary to add signature verification based on HTTPS two-way authentication?

Direct communication between enterprise systems is based on HTTPS two-way authentication. Is it necessary to add additional signature verification to key fields? It involves accounting and security, please give me some advice from someone with relevant experience!

三叔 2017-06-23 09:13:02 0  2  1051

Buttons tag is crucial for Jquery Attr to work

The atrr function is not giving the desired response, I have a small code that gets data from an external API which has several data in a dict. <divid="facet-knowledge-panel"style="margin-left:70px;"><h2id="facet_panels_title"></h2><divid=

P粉141035089 2024-02-04 11:27:56 0  1  587

Violation of Content Security Policy directive: Inline script does not comply with the "script-src 'self'" specification

I use react-create-app to build my Chrome extension. When I use npmrunbuild in react-create-app, I encounter the following error: Execution of inline script is denied because it violates the following Content Security Policy directive: "script-src 'self'". To enable inline execution, use t...

P粉276064178 2023-08-15 14:48:52 0  1  549

Using mysqli_multi_query is critical for successful SQL injection

I'm trying to create a SQL injection example, but MySQL rejects the second query every time unless I change it to mysqli_multi_query. <formaction="<?phpecho$_SERVER['PHP_SELF'];?>"method="post"name="dummyDorm"><label>Name:&lt

P粉925239921 2023-12-15 08:46:18 0  1  479