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sql - Oracle Trigger copy data from one table to another

Student table : student ID, student name, student contact Evaluation: EvalID, Eval number student gives an ... bit of trigger correct? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - Function notifies commentor when the poster should get notified

If I comment on the post named "a", then I get a notification saying that I made the comment on "a" but ... = affected_users, verb='replied to') messages.success(request, "Thank...

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Kendo UI Grid Data variable Vue.js

In the kendo UI it is possible to load the grid with data from a variable in the Vue.js? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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mysql - How can I order by two columns, if result is equal, consider another column?

I have tables called marks, total_marks, and aggregate. I want to sort the results first depending on the ... the one with higher total? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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dplyr - is there a R code for group_by and combinations

Am kindly looking for R code that can calculate the combinations with 2, of the total in each group. library(dplyr) ... <-c(6,6,6) Thankyou See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Using Kotlin library in java android studion

I want to use the chipped bottom navigation by https://github.com/ismaeldivita/chip-navigation-bar, But it is ... What code should I implement. See Question&Answers more detail:os...

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php - PHP_excel: Export to xlsx gets downloaded successfully but when we open it it shows warning Excel found unreadable content

i am using php_excel to export to xlsx. In my application im making use of template. When i download, the ... please suggest me to solve this. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to Print Out the Square Root of A Negative Number with i Displayed in C

I am trying to figure out how to display the square root of a number if it happens to be negative (as it is ... %.4f", num4, sqrt(num4)); See Question&Answers more detail:os...

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c# - It show an error "operator '==' cannot be applied to operands of type 'string' and 'int' " in "where(x => x.person_id == id)"

[HttpGet] public ActionResult EmployeeView(int id) { Employee employee = new Employee(); using (HRMSEntities employeeContext ... (employee); } } See Question&Answers more detail:os...

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How to make JPanel scrollable in Java?

I have a class that extends JPanel, where I have overridden the paintComponent(Graphics g) method. However, I can ... ); frame.setVisible(true); See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Google Sheets: selecting cell values based on another cell MAX values

I'm trying to make a database of students using Google Sheets. It contains info about students, groups and ... answer for a different question. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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nosql - What is a Combo Repository and a Service Bus?

I am learning more about NoSQL and specifically DynamoDB. I recently asked this question: Mapping database structure ... ask another question. See Question&Answers more detail:os...

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java - org.apache.openjpa.persistence.PersistenceException: null

The second line is causing the exception listed below. This code actually works on the test server, but is blowing up on my ... 2.2.0.jar:2.2.0] See Question&Answers more detail:os...

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Dynamic programming - canSum memoization in C++

The objective is to return true if the sum can be made by adding up elements from a given vector. The vector ... else cout << "false"; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - Console (Input string was not in correct format)

Hi guys so i'm starting to learn C# and I came up with this problem when I was trying to mix things up It says "Input ... is: " + prod); } } } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - Invalid method declaration, return type required

I am getting an error at public Rectangle(double width, double height){ saying that it's an invalid method ... .getPerimeter()); } }` See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Cant insert data in database (Access) VB.NET

Im working on a project. Our system is Hotel Reservation. In VB it says that it added in my database but then ... koneksyon() End Sub End Class See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c - Memory at runtime

I have a problem which says I have to read an unknown number of text lines from a file in an array of pointers and ... ; i++; } return 0; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - jQuery - on click not working for element filtered by dynamic CSS

Say I have: <a href="http://foo.com" class="SiteClass"> Then I via jQuery I do some tests and ... mind this class can be added dynamically. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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azure - The remote server returned an error: (403) Forbidden. At C:Program FilesWindowsPowerShellModulesCosmosDB3.1.0.293CosmosDB.psm1

I developed the PowerShell script for creating Database and Collection in the Azure Cosmos DB. #region Parameters ... to resolve the issue? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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php - How to store a radio button in a session for use on another page?

So I need to store the choice of selected radio button in session and then based on that value perform an action on ... one page two //do this See Question&Answers more detail:os...

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c - gcc memory alignment using malloc

I've the following struct: #define M 3 #pragma pack(push) #pragma pack(1) struct my_btree_node { struct ... not want to waste memory. See Question&Answers more detail:os...

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javascript - Function using reduce not working; returning false when should be true

var atLeast = function (tab,n,k){ var frequencyK = tab.reduce(function (acc, val, array){ if (val == k){ ... I can't figure out why that is. See Question&Answers more detail:os...

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PHP how to hide some of page numbers?

I want to ask how i can hide some of the page numbers on the result page so they show like this: [First ... the page numbers when they are more? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Is there a better API for the thing I want

Consider following 2 snippets: This is what I'm after: database.h: template<class T, class T2> class ... the main application? [/EDIT3] See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Mongodb and Express

I am trying to implement related data concept in MongoDB. I have one collection for user and one collection for posts ... ,default:Date.now} } } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Failed to show XML Data with PHP Script

I have about 60000 xml files that i have to insert into a MySQL database. so i thought about making a simple ... help that would be wonderful :) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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php - Searching concatenated field

SELECT `users`.`firstname`, `users`.`lastname`, `users`.`id`, CONCAT(firstname," " ,lastname) AS `users. ... sql guru to help me out. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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