Regarding php business logic and mysql optimization issues

There is a usr table that stores uid, username business table 1, the stored information includes field uid, username business table 2, the stored information is only uid, (multiple data in business table 2 corresponds to one piece of data in business table 1) Existing: Query Traverse business table ...

赵。。。。赵得住 2018-07-11 11:43:28 0  3  1209

I would like to ask all the teachers and seniors about cross-database join table query in TP5.1 ms sql server.

As the title states, I would like to ask you about cross-database connection table query in TP5.1's ms sql server: The current situation is as follows. I have a statistical reporting system project at hand. My backend is made with TP5.1 and the frontend is made with vue. System frontend The user inf...

At** 2018-11-16 03:21:15 0  2  958

python - How to add multiple database support in flask and display the query results on the page in a table?

As shown in the picture, what I want to achieve is the effect as shown above. Select different databases through the web interface, enter the query SQL in the middle input field, and click Execute to display the query results in a table below. If there is an error, , the original error message is di...

为情所困 2017-06-30 09:55:24 0  1  1058

Possible solutions to slow left joins in complex doctrine queries

I have a symfony repository method that fetches a fairly complex dataset which is then placed in a CSV file by an export manager class. I don't want to put the entire code that handles the export job, but I managed to pinpoint the point at which the query slows down, so my question is about any othe...

P粉517475670 2023-09-02 18:55:02 0  2  713

Extract specific JavaScript links and dates from an HTML table using Beautiful Soup

I'm trying to parse an HTML document using beautifulsoup and the FindALL method, but I can't seem to isolate the information I need. I've looked at the documentation and some tutorials, maybe because I'm a junior developer, but I can't seem to isolate the numbers and links. This is a dummy HTML tabl...

P粉436410586 2024-03-29 20:14:35 0  1  352

React.js CSS window width

I'm developing a responsive website using React. For styling I use CSS stylesheets. The response part is implemented in CSS using @media queries. The problem is that when I use Chrome, the elements appear larger and the layout is like I'm accessing the site from a smaller screen (tablet). My underst...

P粉396248578 2024-03-31 16:31:23 0  1  513

The query and formula form the entire table, with new columns, where the new columns are formulas involving other conditional column values

EDIT: The formula should be the "value" column - the "value" column with the lowest user_id based on the category. So row 2 will be 0.04 because the "value" column of the lowest "user_id" for category "A" is 0.01. Feel sorry. I want to retrieve every...

P粉178894235 2024-04-06 21:23:40 0  2  867

MySQL issues when summarizing sales data from two separate tables

Thank you very much in advance for your support. I'm learning SQL and generating some data to play with, but I'm stuck on one simple thing. The table in the screenshot below shows part of my sales20 table, which shows the sales achieved by each employee in 2020 along with region and date information...

P粉391677921 2024-04-04 14:22:13 0  2  494

Select a routing model and store routing data

I'm trying to do something like a comprehensive system of automated activities. The program should have many modules. I plan to organize them according to windows principles. If desired, you can open a new module which you can then close, or open a new module without closing it and return later. For...

P粉949267121 2023-09-14 11:22:24 0  1  674

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't wo...

P粉178132828 2023-09-05 11:18:47 0  1  821

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactNam...

P粉237125700 2023-09-05 14:46:42 0  1  724

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: ...

P粉212114661 2023-09-05 15:18:28 0  1  613

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

P粉076987386 2023-09-05 15:06:32 0  1  577

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in...

P粉369196603 2023-09-05 15:34:44 0  1  1001

How to get average of DATETIME column in MySQL while grouping by other columns

I'm creating and populating a MySQL table using the following query: SETtime_zone='+00:00';CREATETABLEtimestamp_n_datetime(idINT,timeDATETIME,avg_timeDATETIME);INSERTINTOtimestamp_n_datetime(id,time,avg_time)VALUES("1","2023-01-0310:

P粉460377540 2023-09-05 11:46:21 0  1  506

Multi-device (mobile phone) synchronization - React Native

I'm trying to create a Lightshow that will launch on all users' mobile devices at the same time (can have up to 2000-3000 users). All users will use the Internet (Wi-Fi or mobile data). In our FE we use Apollo for subscriptions and it works like a charm. But the problem is, user A can get subscribed...

P粉151466081 2023-09-05 11:58:38 0  1  698

Spades, Diamonds, Hearts, Clubs => styles do not change font color in Chrome for Android

In Google Chrome on Windows, the card suit symbols (spades, hearts, diamonds, clubs) are colored correctly using the "style" attribute. Unfortunately, the same page displayed in Google Chrome on Android does not display the colors I defined but uses the default black and red. (See the atta...

P粉896751037 2023-09-05 15:25:13 0  1  755

How to hide mui TextField label?

I'm developing a Nextjs app and I have a dashboard navigation bar built with mui that contains a notification that opens the notification box, which is built with regular HTML and CSS. dashboard-navbar.js: importNotificationBoxfrom"./notification-box/notification-box";//...exportconstDashb...

P粉239164234 2023-09-05 15:41:00 0  1  683