Ranking function in MySQL

I need to find out the ranking of customers. Here I add the corresponding ANSI standard SQL query according to my requirements. Please help me convert this to MySQL. SELECTRANK()OVER(PARTITIONBYGenderORDERBYAge)AS[PartitionbyGender],FirstName,Age,GenderFROMPerson Is there a function to query ranking...

P粉310754094 2023-08-24 00:03:12 0  2  446

Python equivalent of the "INET6_ATON" SQL function

I want to convert a PHP program using MySQL to Python. I found a way to store the database, but I need to find a Pythonic replacement for the INET6_ATONSQL function. Can anyone help me?

P粉030479054 2023-09-06 14:36:14 0  1  461

XSLT - Convert images (and pdf) to base64

I'm using ApacheFOP2.8 to convert ApacheFOP intermediate format (IF) files into HTML files with a self-written xslt stylesheet. As an external library, I currently only have saxon12he installed. Issue #1 (Image to base64) In the source IF document, there is an image xml element like this: <imagex...

P粉529245050 2024-01-16 16:01:19 0  1  507

Simplify input of mathematical symbols to make it easier for you on the Internet

Is there a solution for a React library that allows users to easily enter mathematical symbols and have them converted to LaTeX on the backend? I mean, like a user-friendly editor, maybe with clickable buttons? These elements are then converted to LaTeX on the backend.

P粉057869348 2023-09-14 14:13:34 0  1  612

javascript - Long Weibo generation tool development ideas

I want to develop a long Weibo generation tool for my blog, which is to save the blog content as a long picture and share it on Weibo. Are there any good implementation ideas? You can use php, golang, javascript, html5. I have seen this library html2canvas.js, but unfortunately it can only...

世界只因有你 2017-05-16 13:09:00 0  3  534

How do everyone write PHP programs to process the HTML code entered by the user?

In order to filter HTML and JS code, should htmlspecialchars() be called before writing the library or when reading the library? Or what?

PHPz 2017-05-27 17:43:23 0  2  931

In MySQLi, convert query errors into exceptions

I'm trying to convert MySQLi query errors into exceptions, but it's not possible - mysqli_sql_exception is only thrown when connecting to the database fails. I used mysqli_report(MYSQLI_REPORT_STRICT) with a procedural MySQLi function embedded in a custom wrapper class. Previous code: publicfunction...

P粉060528326 2023-08-24 11:53:00 0  2  548

How to display single SQL query results in PHP

I have a query about this php code and can't display the results in echo, can I convert to string? //conexion is my function that connects to the database and is completed $costTotal=conexion();$costTotal=$costTotal->query("SELECTSUM(product_cost)FROMproduct");echo$costTotal;For example...

P粉852578075 2023-08-17 20:30:29 0  1  585

mongodb - What object is the data taken out from the database?

Does the data fetched from the database need to be converted into a JSON object when responded to the page? Why? {Code...} I don’t know much about databases, so I may not be asking the right questions. Please give me some advice.

阿神 2017-05-02 09:24:47 0  1  667

objective-c - library not found for -lssl?

ld: library not found for -lsslclang: error: linker command failed with exit code 1 (use -v to see invocation)

仅有的幸福 2017-05-02 09:22:35 0  1  677

Python converts json to lua table

Recently, there is a business that converts json into lua table format and runs it in lua. Because I don't know lua, I can only use python to convert it. Is there any library of this type? {code...} changes to {code...}

伊谢尔伦 2017-05-18 10:59:21 0  1  822

php - What are the problems with both reading and writing in the database master-slave transaction?

It's an interview question. The general idea is that the database uses a master-slave method. If there is both reading and writing in a transaction (there are multiple reading and writing operations), I know that there may be problems with the database master-slave reading and writing in the same pr...

黄舟 2017-05-16 13:06:14 0  1  520

How to store the emoji expression in the nickname of WeChat user information interface in PHP into mysql?

As the title states: It is currently confirmed that the obtained string is converted to unicode encoding and stored in the table. The encoding of the table is utf-8; the problem encountered now is: if the json_encode() function is used to escape multiple times and then stored in the database The str...

天蓬老师 2017-05-16 13:06:54 0  3  945

Migrating to PHP 8.1 - How to fix deprecated passing null to parameter error - Rename build in function

PHP8.1 has deprecated passing null as a parameter to many core functions. My main problem is with functions like htmlspecialchars(php) and trim(php) where null is no longer silently converted to an empty string. To solve this problem without using a lot of code, I tried renaming the original built-i...

P粉420868294 2024-01-10 16:21:21 0  2  529

github - How does git bind the remote branch when pushing?

Initialize the local git library git init Create the library on github Add the remote push address git remote add origin (Note: Why can't this origin be modified?) git@git.com/xxx/xxx.git I think origin is equivalent to the remote library , so bind the remote branch {generation...

PHP中文网 2017-05-02 09:48:59 0  2  741

Objective-c - Third-party LxFTPRequest FTP upload always reports an error

1. When using a third-party library to upload files to ftp, an error is always reported. 2. Code: {code...} Total output error: domain = 1, error = 49, errorMessage = Unknown. Among them, domain=1 is: {code... } error=49 is: #define EADDRNOTAVAIL 49 / Can't assign re...

ringa_lee 2017-05-02 09:24:54 0  0  887

Unable to insert into database

user/register?? It’s the same as the teacher’s code. Why can’t the registration jump and the database can’t be inserted? It’s just refreshing the register page.

the Buddha 2019-08-19 22:30:21 0  2  1339

gitblit - Can git set up a reminder after the remote repository is updated?

The company uses gitblit. There are dependent libraries in my project that are also managed using git. I usually don’t pay attention to dependency updates in a timely manner because other people also need to use them. Is it possible to send me a reminder, such as an email, when a dependent library i...

伊谢尔伦 2017-05-02 09:39:10 0  1  806

Should I include node modules in my library package?

I'm developing a React component library. This library is used by several internal NextJs projects. For compatibility reasons with NextJs, this library will need to be converted to CommonJs at some point. The problem is that some npm dependencies of my library don't handle CommonJS. This is the case...

P粉716228245 2023-09-12 19:36:43 0  1  605

Convert string to date in Laravel

I have a string representing a date. I want to store it in my database but the problem is that in my database the property is defined as date. How to correctly convert a string to a date so it can be stored in the database? This is how my string looks like: "fecha":"31March2023"....

P粉270891688 2023-09-07 11:41:49 0  1  933