Angular 4 Sort Array

I will create an Angular 8 app to show Angular Material 8 data table example. A component in Angular 2 means it is a combination of HTML, class, directive, provider, service…. Following is a list of filters used for transforming data. sort() method sorts the elements of an array. Angularjs quick filter sort an array by strings. Angular empowers developers to build applications that live on the web, mobile, or the desktop. In this tutorial, you'll see how to create a web app using Angular 4 & MongoDB. The first version that was released is Angular1, which is also called AngularJS. Dot Net Perls has example pages for many languages, with explanations and code side by side (for easy understanding). * You don't appear to be subscribing to your Observable in your ListComponent. Programming projects and tutorials about front-end development. from the command line. Grab and sort from drag handle on the left or right side, or tap/click and hold to sort. Im working on sorting on an array using Angular JS using orderBy. some() Returns true if at least one element in this array satisfies the provided testing function. The “filter” filter can only be used on arrays, and it returns an array containing only the matching items. If you're new to JavaScript you might be confused by the 2. In this post, we are going to go through a complete example of how to use the Angular Material Data Table. An array is a special type of data type which can store multiple values of different data types sequentially using special syntax in TypeScript. The item should be declared in an. AngularJS will be used to refer to the older v1. Typescript - How to Convert Object to Array or Array to Object| Angular Example, Angular Example, Object. My previous article, Client and Server-Side Data Filtering, Sorting, and Pagination with Angular NgExTable, describes the base structures and uses of the custom data grid tool. Today we'll be looking at a way to sort and filter our tabular data. Angular Bootstrap Datatables are components that mix tables with advanced options like searching, sorting, pagination and generating CSV files. Update to Angular 8 version. Join the community of millions of developers who build compelling user interfaces with Angular. » Tutorial Angular 4 Table And Pagination Using Angular2-datatable For Beginner By Sigit Prasetya Nugroho ∙ November 1, 2017 ∙ Javascript ∙ 3 Comments Showing the data set in the table in angular 4 is quite easy. 1 is out and it introduces a new KeyValue pipe to help you iterate through objects, maps, and arrays. The latest version of Angular (version 7) // run the command in a terminal ng version. 1 So passing ['title','issue','-grade'] to orderBy tells Angular to sort first by the title, then by the issue and finally by the grade properties of the it object. We will explore the filtering and sorting features offered by Angular JS. Angularjs table sorting: An orderBy filter is used to sort an Angularjs table. In this tutorial, We will be creating a simple kanban board with Angular 4. Angular Material offers data tables to show the data on frontend. controller('. js and MongoDB. comparing } every time - Jaroslaw K. Just go through our Best Angular 4 Course Content, then you came to know how we differ from others and how our Angular 4 course worthy for your career. Angularjs table sorting: An orderBy filter is used to sort an Angularjs table. js from the best Angular. As seen in the above code, you just iterated the array containing duplicate entries and inserted each of item to another array unique_array after checking if it already doesn't exists in that array. Filter is an important part in AngularJS as well as Angular 2 or Angular 4. sort Array. How about we split ng-repeat into two directives: ng-repeat - only works for arrays and iterates over the items in the collection; ng-object - only works for object collections but has hooks for providing filtering and sorting functions; This would have a number of benefits. For example, if one of the nodes is visible – we must display its parent, and grandparent etc. forEach iterate on each property of obj and push will add the name property in 'names' array and display name in UI. If a predicate cannot determine the relative order of two items, the next predicate is used as a tie-breaker. Angular Material installed on the above app. 1 So passing ['title','issue','-grade'] to orderBy tells Angular to sort first by the title, then by the issue and finally by the grade properties of the it object. AngularJS Filters. Array: An array of function and/or string predicates. Note: If the predicate is missing or empty then it defaults to '+'. There are two big words of caution with the built-in sort method. In this tutorial we are going to understand how to handle array of objects in AngularJs. It also has ability to create custom pipes. This paper explores the. Angular: Create a Filter/Sort Service. Note This directive is the successor of Angular 1s ng-repeat directive. While calling sort() by itself simply sorts the array in lexicographical (aka alphabetical) order, the sky's really the limit once you go beyond the surface. Lightweight, with modular architecture. JavaScript does have basic sorting functionality already built into it. Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. It is used to specify in a list. To set up table sorting, use one of the options presented below. Angular Bootstrap table sort Angular Table sort - Bootstrap 4 & Material Design. Do let us know your thoughts and suggestions in the comments below. May 9, 2013. AngularJS - Sorting Array Items using Angularjs Create NGTodo Application using AngularJS; Create Calculator application use Angularjs. So for when we have a basic array, we can simply use this sorting functionality like so:. Angular 4 is updated version of angular 2. I will create an Angular 8 app to show Angular Material 8 data table example. Angular Material provides datatable components equipped with many common features like data filter, pagination, sorting on columns and even frozen columns and headers. Join the community of millions of developers who build compelling user interfaces with Angular. This angular tutorial help to integrate jQuery datatable with angular 4. AngularJS has an orderBy function which can be used to sort a list of objects by any property. Source code from this tutorial is available on GitHub. sorting Array by name. sort(), a method that's probably as much misunderstood as it is underestimated. Reverse the first and second arguments to sort in descending order. This feature is not available right now. The default sort order is built upon converting the elements into strings, then comparing their sequences of UTF-16 code units values. Contribute to angular/code. You can update to angular 8 framework and CLI by using this command. In-place editing on your website - based on JavaScript - is now easier and quicker. Sorting arrays in JavaScript is done via the method array. Angular 2 Set Up; CRUD in Angular2; DS-Sorting. This is a step-by. Online tools - AngularJS, MySQL, JS, JQuery, PHP. It is used to specify in a list. Also add the modules to the imports array of best stories on. sort(ComparatorFunction) Parameters are ComparatorFunction is a function which specifies the order of the elements, If not passed, Default sorting is applied. Angular doesn’t offer such pipes because they perform poorly and prevent aggressive minification. The employees array above is an array of objects with properties of different data types, from string, numeric, to a date string. What we need to. Intertech delivers Introduction to Angular 4 Programming training. The back-end used here is a SQL Server database. May 9, 2013. You should add/modify the files as you see fit according to your project structure. This is continuation to Part 8. So, the time complexity for selection sort is O(n 2) as there are two nested loops. Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. with basic accessibility support. Online tools - AngularJS, MySQL, JS, JQuery, PHP. Almost every Ionic 3 or Angular 5 application that has a list need to searching and sorting the list. Model-driven form with Angular FormBuilder. The magic of two-way data binding won over many converts to AngularJS and helped it spread like wildfire. Following is a list of filters used for transforming data. Angular1 was followed by Angular2, w. Note: If the predicate is missing or empty then it defaults to '+'. element() Function in AngularJS is used to initialize DOM element or HTML string as an jQuery element. My previous article, Client and Server-Side Data Filtering, Sorting, and Pagination with Angular NgExTable, describes the base structures and uses of the custom data grid tool. Preview the future of collaboration, from Sketch to code with zero wasted cycles. Angular 2 + 4 Tree Table. But we are preparing some new stuff and WEB API searching, sorting and filtering will be included as well. 2 points · 4 years ago I fiddled around with this idea a bit to implement generics and make the methodology a bit more secure. Filtering on the tree is not trivial, since the filtering process needs the keep the tree structure. Angular executes a pure pipe only when it detects a pure change to the input value. In this article, I am going to perform some tasks like binding records, pagination, sorting, and filtration in an Angular 7 Web application. A Kanban board is a work and workflow visualization tool that enables you to optimize the flow of your work, a basic Kanban board has a three-step workflow: To Do, In Progress, and Done. we are going to use Angular 7 project to work with Angular Material Table component. Using the built-in filter and orderBy filters we will filter and sort the friends list client-side. An example of a filter is the 'uppercase' filter which takes on a string output and formats the string and displays all the characters in the string as uppercase. This is the second article of the NgExTable series, which details the multiple column sorting practices and workflow with. AngularJS has various filters which make easier to search and sort the data. However, if we still want to filter some results with a search bar, we can create our own filter pipe. See the examples below. Note: If the predicate is missing or empty then it defaults to '+'. sort() method is used. The function calculates 40 - 100 (a - b), and since the result is negative (-60), the sort function will sort 40 as a value lower than 100. Material Design Components For Angular Part 4: Data Table This is the fourth part of the Angular Material series on CodingTheSmartWay. There are many angular directives and modules available for table grid but datatable is most popular table grid plugin. Angular is Google's open source framework for crafting high-quality front-end web applications. It is supported by all the HTML elements. String: If the array is an array of objects, you can sort the array by the value of one of the object properties. The function invokes the iterator function that iterates or loops through each item in an array. You can even define your own criteria, and we'll go into. In AngularJS, we would have used built-in filters for this, such as filter and orderBy. How to make a sorting pipe in angular2 with an array of objects Original Problem: I have a TODOs list, (Todo[ ]) and I want to sort it every time I make some changes. Optionally prefixed with + or - to control ascending or descending sort order (for example, +name or -name). * Your sortItem behavior subject appears to be doing nothing. The sort() method sorts the items of an array. Merge sort is an efficient and comparison based algorithm to sort an array or a list of integer you can say. Online tools - AngularJS, MySQL, JS, JQuery, PHP. Learn Angular. Apparently, this is removed in Angular and from doing research it seems the preferred method is to sort the data itself, such as in ngOnInit. Sort pipe in Angular 6/7 (updated) updated: included a check to verify if it is a 1d array or multi dimensional array & perform sort. There are many angular directives and modules available for table grid but datatable is most popular table grid plugin. AngularJS | ng-show Directive The ng-show Directive in AngluarJS is used to show or hide the specified HTML element. 1 So passing ['title','issue','-grade'] to orderBy tells Angular to sort first by the title, then by the issue and finally by the grade properties of the it object. The function calculates 40 - 100 (a - b), and since the result is negative (-60), the sort function will sort 40 as a value lower than 100. Angular material provides matSort directive for sorting purpose and we require to add mat-sort-header to each column header cell that we want to sort and matSort in the mat-table directive. Array expressions in angularjs are the expression that hold an array and use those array objects while evaluating array expressions in angularjs. Virtual Scrolling is different from infinite scroll – where it renders batches of elements and then when user goes to bottom of the list, it renders the rest. The sort() method sorts the elements of an array in place and returns the sorted array. For example, if one of the nodes is visible – we must display its parent, and grandparent etc. This is the easiest way of sorting. Sorting data means arranging it in a certain order, often in an array-like data structure. At your disposal are eight types of charts and multiple options for customization. The attribute names are aligned with those used by DataTables, so if you are familiar with DataTables, this directive should be easy to use. Pipes were earlier called filters in Angular1 and called pipes in Angular 2 and 4. Angular 2 has pipes, which fulfill a similar purpose. But if the key is complex,we can pass our own custom compare function to sort the array. The sort method will, by default, sort in ascending order using the string Unicode code points. Since filter accepts an Observable, and not an array, we have to convert our array of JSON objects from data. The sort() method sorts the elements of an array in place and returns the sorted array. How to Set limit text in textbox using angularjs; Angularjs Array Binding and Filter Concept; MySQL Line Comment Tutorials; Simple Angularjs tutorial. This angular tutorial help to integrate jQuery datatable with angular 4. Using the built-in filter and orderBy filters we will filter and sort the friends list client-side. * You don’t appear to be subscribing to your Observable in your ListComponent. 3 snippet that keeps track of the scroll position of a component and animates it into the view. Angular Grid Angular Data Grid component for Enterprise Apps. The anonymous function returns whether or not the first object's age is less than the second's, thus sorting the entire array in ascending order by age. Angular1 was followed by Angular2, w. AngularJS will be used to refer to the older v1. Angular 4 - Overview - There are three major releases of Angular. Search filter makes easier to filter the list of records and view the only required records. NET MVC C# C# programs Collection convert csharp database download Example F# File guide How to How to in Java integer Java Javascript Lab programs Lambda LINQ List Silverlight SQL Server string tips tricks tutorial tutorials UWP video visual studio 2015 Windows Windows 8 Windows 10 Windows Phone Windows. Sort which internally use Quicksort algorithm. While calling sort() by itself simply sorts the array in lexicographical (aka alphabetical) order, the sky's really the limit once you go beyond the surface. Today I had to implement custom sorting in AngularJS. Here, I'm using TypeScript lambda syntax to do the sorting. Introduction. You can even define your own criteria, and we'll go into. 8 (46 ratings) Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. Bubble Sort is a sorting technique to sort an array, or we can say to sort a list of many numbers. Credo Systemz is the Best Training Institute for Learn Angular 4 with real-time project oriented. The context for each embedded view is logically merged to the current component context according to its lexical position. In the early days of AngularJS, one of the most celebrated features was the ability to filter and sort data on the page using only template variables and filters. Array String sort Example Array Declared and initialized with new Array() and strings separated in comma No comparator function passed and Array. So, it could be 3,4,5 or more checkboxes on the form. How to sort an array of objects with. The Kendo UI Grid for Angular enables you to bind it to an array or GridDataResult objects by setting the data property of the sorting, filtering, and editing. We're going to step through. An expression can be optionally prefixed with + or -to control the sorting direction, ascending or descending. Angular Material 8 Data Table tutorial is going to be explored in this tutorial today. Like date data, it would be great, if we can show date like December 10, 2018 instead of 12/10/2018 or 12-18-2018. Array: Suppose two item values are equivalent like marks of the two students (A and B) are the same like 95% and we are sorting by percentage (%), then there might confusion about whether the student name should be first, so for that the next predicate is used. In this part of the tutorial, you'll learn how to write the back end for the Angular 4 grocery manager web app using Node. In this tutorial, I am. Following is the result of implementing sorting for table columns using ng-table module in angularjs applications. Angular Material provides datatable components equipped with many common features like data filter, pagination, sorting on columns and even frozen columns and headers. If you omit the compare function, the sort() method sorts the elements with the sort order based on the Unicode code point values of elements. Note: If you need any help regarding ng update command, you can check this link: angular. The angular. You wish to filter and sort a relatively small list of items all available on the client. r/Angular2 exists to help spread news, discuss current developments and help solve problems. Im working on sorting on an array using Angular JS using orderBy. Angular Material 8 Data Table tutorial is going to be explored in this tutorial today. Uses jqueryui for autocomplete. 2 points · 4 years ago I fiddled around with this idea a bit to implement generics and make the methodology a bit more secure. In the Angular docs, they are described as a sort of array: You can think of an observable as an array whose items arrive asynchronously over time. Angular 2 Search and Sort with ngFor repeater with example angular 2 sort table angular 2 search pipe angular 2 orderby pipe angular 2 orderby alphabetical angular 2 sort array of objects angular 2 orderby pipe example the pipe 'orderby' could not be found typescript sort array. This feature is not available right now. com is a helpful resource to understand how the operations work. In the first part of this tutorial, you learnt how to get started with creating a web app using Angular 4. NET MVC C# C# programs Collection convert csharp database download Example F# File guide How to How to in Java integer Java Javascript Lab programs Lambda LINQ List Silverlight SQL Server string tips tricks tutorial tutorials UWP video visual studio 2015 Windows Windows 8 Windows 10 Windows Phone Windows. Angular-cli generates tsconfig. Today we'll be looking at a way to sort and filter our tabular data. It is a Divide and Conquer algorithm which was invented by. Angular Bootstrap table editable Angular Table editable - Bootstrap 4 & Material Design. Observables help you manage asynchronous data. jQuery datatable is very popular and featured jQuery grid plugin. So we can say an Array may me a Function. The sort() method can be used to sort the array based on the values of one of these properties, such as sorting the array by name, age, or even when they retire. Because JavaScript treats 0 as loosely equal to false (i. For Angular 2/4/5/6/7/8 and Ionic 2/3/4. Angular Listview reorder demo. » Tutorial Angular 4 Table And Pagination Using Angular2-datatable For Beginner By Sigit Prasetya Nugroho ∙ November 1, 2017 ∙ Javascript ∙ 3 Comments Showing the data set in the table in angular 4 is quite easy. Follow this short tutorial. Angularjs table sorting: An orderBy filter is used to sort an Angularjs table. In this tutorial, we are going to discuss how to use a simple Array in AngularJs application. If the checkbox is checked, a new FormControl/HTML element will appear next to it. AngularJS - Sorting Array Items using Angularjs Create NGTodo Application using AngularJS; Create Calculator application use Angularjs. ag-Grid and its Angular wrapper are distributed as NPM packages, which should work with any common Angular project module bundler setup. For example, if I have an array with foo and bar, if I sort the array, bar will come before foo. The example that I am going to share with you here is an extension of my previous article on how to sort date extracted from a JSON array and show the data in descending order using AngularJS ng-repeat orderBy filter. View our Introduction to Angular 4 Programming training and register today!. If a predicate cannot determine the relative order of two items, the next predicate is used as a tie-breaker. In this article, I am going to perform some tasks like binding records, pagination, sorting, and filtration in an Angular 7 Web application. module('sortModule', []) app. Spatio-Angular Resolution Tradeoff in Integral Photography Todor Georgeiv1, Ke Colin Zheng2, Brian Curless2, David Salesin1,2, Shree Nayar3, and Chintan Intwala1 1Adobe Systems 2University of Washington 3Columbia University Abstract An integral camera samples the 4D light field of a scene within a single photograph. Sort an array of objects in Angular2. Angularjs bind array list to radio buttons example. In the tutorial, I am using orderBy filter to change sort order when column header gets clicked. This works well for strings ("Apple" comes before "Banana"). All code belongs to the poster and no license is enforced. Angular 4 Training in Chennai at Credo Systemz offering Best Angular 4 Training. In the old directive, the Array. The angular. We will explore the filtering and sorting features offered by Angular JS. Join the community of millions of developers who build compelling user interfaces with Angular. IDE Plugins AngularJS support in your favorite text editors. Array: An array of function or string predicates. If a predicate cannot determine the relative order of two items, the next predicate is used as a tie-breaker. If jQuery is available angular. Angularjs orderby filter with example. This is the easiest way of sorting. The table headings that the table is currently sorted on is styled with tablesort-asc or tablesort-desc classes depending on the sort-direction. May 9, 2013. Angular University on Angular Core 29 January 2018 Angular Material Data Table: A Complete Example (Server Pagination, Filtering, Sorting) In this post, we are going to go through a complete example of how to use the Angular Material Data Table. String: If the array is an array of objects, you can sort the array by the value of one of the object properties. This is continuation to Part 8. Merge Sort In C++ Tutorial With Example | C++ Merge Sort Program is today's topic. A comprehensive step by step tutorial of Ionic 3, Angular 5 and Sort List of Data with a working example. we can find data in order by any field then we can find any data easily from reach data. Filtering and Sorting a List Problem. Observables help you manage asynchronous data. See the examples below. When comparing 40 and 100, the sort() method calls the compare function(40, 100). I will create an Angular 8 app to show Angular Material 8 data table example. I'll be using the Angular 4 quickstart repo as my project. So, it could be 3,4,5 or more checkboxes on the form. Sorting data means arranging it in a certain order, often in an array-like data structure. The comparison between values is strict. A common data structure is the list (not to be confused with array). limitTo Limits an array/string, into a specified number of elements/characters. Almost every Ionic 3 or Angular 5 application that has a list need to searching and sorting the list. Today we'll be looking at a way to sort and filter our tabular data. 242 Angular Snippets (TypeScript, Html, Angular Material, Flex Layout, ngRx, RxJS, PWA & Testing) Updated for v8 Beta Installation Launch VS Code Quick Open ( Ctrl+P ), paste the following command, and press enter. Angularjs quick filter sort an array by strings. Our app is going to need several different ways to organize arrays of data. If jQuery is available angular. View our Introduction to Angular 4 Programming training and register today!. It does support a pretty cool selector syntax, which is. I checked your code. The example that I am going to share with you here is an extension of my previous article on how to sort date extracted from a JSON array and show the data in descending order using AngularJS ng-repeat orderBy filter. In AngularJS, we would have used built-in filters for this, such as filter and orderBy. Angular Bootstrap Editable Tables are components with which you can add and remove rows and change text and information within cells. If a predicate cannot determine the relative order of two items, the next predicate is used as a tie-breaker. The Degree Angular Scale Interferometer (DASI) was a telescope installed at the U. In the Angular docs, they are described as a sort of array: You can think of an observable as an array whose items arrive asynchronously over time. Learn Angular. You only have 2 arrays defined but in fact 4 columns to be displayed. As I mentioned earlier, Angular JS offers much more than just data binding. Intertech delivers Introduction to Angular 4 Programming training. Angular pipes can be used to make custom pipes and sort the array and array of objects. What’s not clear from the documentation or common examples is that is that it can also accept an array of properties with which to order the collection. In this part we’ll be focusing on Data Tables. The first one is a custom Angular filter and the second one is a default JavaScript array method. Angular Bootstrap datatables Angular Datatables - - Bootstrap 4 & Material Design. In this article, I am going to explain the simple data grid control with sorting, formatting and export to CSV functionality. UI component infrastructure and Material Design components for mobile and desktop Angular web applications. json Format an object to a JSON string. Angular ngFor - Learn all Features including trackBy, why is it not only for Arrays? Last Updated: 26 April 2019 local_offer Angular Core In this post we are going to go over the ngFor core directive, namely we are going to go over the following:. Selection Sort Number Range Spinner is Angular JS directive which is used for incrementing OR Find all subsets of a set OR Print all subset of an array. js and MongoDB. JSON doesn't have a native date/time data-type. Source code from this tutorial is available on GitHub. AngularJS Filters. Sorting in Data Table. we can convert string array to json object using angular. ng2-bs3-modal modal. x has filters. you can see bellow example to converting string to object in angular js. What we need to. Array String sort Example Array Declared and initialized with new Array() and strings separated in comma No comparator function passed and Array. JavaScript does have basic sorting functionality already built into it. The attribute names are aligned with those used by DataTables, so if you are familiar with DataTables, this directive should be easy to use. Angular Material offers data tables to show the data on frontend. Note: If you need any help regarding ng update command, you can check this link: angular. Angular uses pipes to transform data, but no longer provides out-of-the-box pipes for filtering or sorting for reasons cited here. Filtering and Sorting a List Problem. Hi Friends, Hope you are all well. This is a step-by. Angular pipes can be used to make custom pipes and sort the array and array of objects. Since filter accepts an Observable, and not an array, we have to convert our array of JSON objects from data. If you added the ability to remove or change a hero, Angular would detect those changes and update the display as well. I tried changing the names starting with A,B,S,Z across the page so when I sort it shud be sorted across the page but its sorting on per page basis. inArray() returns 0. js and MongoDB. for string manipulation, also we will avoid using LINQ as these are generally restricted to be used in coding interviews. For the purposes of this tutorial, we are going to scaffold an Angular app with angular CLI. We can use this pipe anywhere as follows. But many times we need to limit the list to be only with unique values. Paginating and Sorting a WebApi ResultSet using AngularJs. Angular is a platform for building mobile and desktop web applications. Angular 5+ orderBy pipe. conf lib should be modified. jQuery datatable is very popular and featured jQuery grid plugin. An array is a special type of data type which can store multiple values of different data types sequentially using special syntax in TypeScript. filter functions you see. Ready to run. We will explore the filtering and sorting features offered by Angular JS. I will use angular CLI to create Sample angular 4 application file structure and HTTP module to get data from rest api call. js Online Training in your locality at CatchExperts. How about we split ng-repeat into two directives: ng-repeat - only works for arrays and iterates over the items in the collection; ng-object - only works for object collections but has hooks for providing filtering and sorting functions; This would have a number of benefits. You have a lot of problems. Go through the following steps for creating Angular project to download file from server using Angular. HTML, CSS, JavaScript, VanillaJS, jQuery, Angular, Ember. The magic of two-way data binding won over many converts to AngularJS and helped it spread like wildfire. 0 == false, but 0 !== false), to check for the presence of value within array, you need to check if it's not equal to (or greater than) -1. 1 So passing ['title','issue','-grade'] to orderBy tells Angular to sort first by the title, then by the issue and finally by the grade properties of the it object. 4 Breaking Changes to Be Aware Of. When a user interacts with your app, it's sometimes necessary to know when this happens. Custom Sorting in AngularJS. The sort order can be either alphabetic or numeric, and either ascending (up) or descending (down). It's a simple approach that allows you to define how the table is filled with data, instead of the table sort forcing you to use either client side or server side. Angular 4 pipes have built in pipes like uppercase pipe, date pipe, slice pipe etc. Array: Suppose two item values are equivalent like marks of the two students (A and B) are the same like 95% and we are sorting by percentage (%), then there might confusion about whether the student name should be first, so for that the next predicate is used.