Embedding query operations in MySQL IF statements

Is there a way to run insert query in IF statement, I know the syntax of if statement is IF (condition, statement to be executed if condition is true, statement to be executed if condition is false) My question is if it is possible to run insert statement based on condition, For example IF((select c...

P粉155832941 2024-02-17 16:44:15 0  1  515

node.js - How mongoose filters and paging based on related tables

Problem background: In the following two schema {code...} columns, active needs to be configured and modified, and the news table has a large number of insertion needs. Problem description: How to perform paging query on news, and the query condition is column.active is true? How to count query cond...

PHPz 2017-05-24 11:35:40 0  1  1845

Overlap a div without using z-index

I've got a problem that I can't seem to solve, I'm thinking of some CSS magic, but what's the best approach for this problem? I have a progress bar component which has an ideal area and actual progress bar. When the progress bar overlaps the ideal area, I want to hide the ideal area as if it had a s...

P粉124070451 2023-08-17 13:56:28 0  1  626

javascript - jQuery plug-in to intercept string length, encounters the problem of not being able to correctly obtain the text() in the element

I made a plug-in that intercepts the length of a string. When the number of characters exceeds the specified number, it intercepts the characters and displays the complete content prompt by following the mouse. It can be achieved when writing the function alone, but after using the following method ...

typecho 2017-06-28 09:28:00 0  2  959

After inserting data in MySQL, conditionally increase two values

I currently have the following three tables in a football database: teams(name)season(name,beginning,end)game(id,Date,season,hometeam,awayteam,HomeTeamScore,AwayTeamScore) (hometeam, awayteam and season are foreign keys ) Now I want to have a new table that records the goals scored and goals concede...

P粉937382230 2023-09-02 10:52:17 0  2  581

Is it possible to use vuetify rules to validate image width, height?

I want to validate image width and height using vuetify. I wrote a function to check the image and compare it with a condition. Although I can check the width, height of the image, the rules are always wrong <v-file-input:id="'file-input-'+label"ref="fileInput":rules="rul...

P粉652523980 2024-03-29 14:30:58 0  1  516

angular.js - $ionicScrollDelegate.getScrollPosition() cannot obtain the corresponding height after entering the page for the first time

1. It is a time selection plug-in found online as shown in the picture. Click on the date and the following box will pop up. When ionic is started for the first time, this page will not be refreshed. $ionicScrollDelegate.getScrollPosition() cannot obtain the height. If the scrollTo method is used, t...

大家讲道理 2017-05-15 17:07:21 0  1  838

Dynamic element event binding: How to bind events to dynamically created elements?

I have some code where I loop through all the select boxes on the page and bind the .hover event to them to make some adjustments to their width on mouseon/off. This happens after the page is ready and working fine. The problem I'm having is that any select boxes added via Ajax or DOM after the init...

P粉046878197 2024-03-25 15:37:38 0  2  765

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  889

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  774

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  652

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  621

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  1039

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  531

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  724

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  779

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  707

Custom Bootstrap 5 carousel on mobile (multiple items, but not in one row)

I'm having trouble trying to customize the carousel layout on mobile devices. I want it to show every item of the carousel on mobile instead of just one, but after trying with some CSS and JS, especially using displayfloat or max-witdh I'm just starting to think this isn't possible, Or I don't know ...

P粉763662390 2023-09-05 11:53:56 0  1  612