SQL UNION GROUP BY
SQL UNION Operator UNION operator is used to combine the results of two or more SELECT statements Every SELECT statement within UNION...
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ashutoshsharma52
- May 25, 2022
- 1 min
SQL JOIN
JOIN clause is used to combine rows from two or more tables. INNER JOIN === selects records that have matching values in both tables...
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ashutoshsharma52
- May 24, 2022
- 5 min
All SQL Query
Select all Customers ==== SELECT * FROM CUSTOMERS ( CUSTOMERS --- TABLE Name) SELECT - extracts data from a database UPDATE - updates...
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ashutoshsharma52
- Apr 15, 2022
- 1 min
How To Setup an Auth Module, User Entity & User Repository
Creating a new module nest g module auth nest for nest g for generate auth for the file name Creating a controller nest g controller auth...
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ashutoshsharma52
- Apr 14, 2022
- 2 min
Connecting NestJs with TypeORM
install npm install --save @nest/typeorm typeorm pg Pg is for postgre that we are going to use in this these are the two modules we are...
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ashutoshsharma52
- Mar 15, 2022
- 2 min
What is Async Wait???
Where to Find ASYNC Request Promises are a typical construct that help you deal with asynchronous code because promises work like that....
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ashutoshsharma52
- Mar 13, 2022
- 3 min
How authentication works in rest Api
Restful APIs is Stateless Server so it is different then our server validation what we normally use for our backend. but in case of REST...
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ashutoshsharma52
- Mar 12, 2022
- 1 min
How to add a User Model in REST APIs?
We are using React app I will link that in our downloads so that you dont have to worry about the frontend. I will make Blogs on Frontend...
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ashutoshsharma52
- Mar 12, 2022
- 1 min
How to add pagination in our REST APIs in our backend ?
We are using React first for our front end... countDocument - It will count how many documents we actually have, skip() - We can skip a...
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ashutoshsharma52
- Mar 9, 2022
- 2 min
How to add Payment in Node Js
Payment method is required in most of the e-commerce or any paid subscriber based company. In Node Js application its not very hard to...
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ashutoshsharma52
- Mar 8, 2022
- 3 min
Asynchronous JavaScript: Understanding Asynchronous request in NodeJS
What are Asynchronous requests? behind asynchronous requests is that you do send the request but that request typically contains just...
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ashutoshsharma52
- Mar 8, 2022
- 1 min
Dynamic Pagination
<section class="pagination"> <% if ( currentPage !==1 && previousPage !==1) { %> <a href="?page=1">1</a> <% } %> <% if(hasPreviousPage){...
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ashutoshsharma52
- Mar 8, 2022
- 2 min
Hard Coded Pagination in Node JS without 3rd party packages....
We have made a hard coded pagination its just the basic of pagination and it will look this pagination which allows us to split our data...
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ashutoshsharma52
- Mar 8, 2022
- 1 min
Fire and Forget Functions
While deleting FIles in our Node application we sometimes use fire and forget that means we are not checking it back weather our file is...
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ashutoshsharma52
- Mar 8, 2022
- 1 min
How to Create Pdf on the server automatically?
We want to generate that file based on the real order data. for that first of all will still check if we have that order and if the user...
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ashutoshsharma52
- Mar 8, 2022
- 2 min
Reading Files into memory in NodeJs
reading file data into memory to serve it as a response is not really a good practice, for tiny files it might be ok but for bigger...
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ashutoshsharma52
- Mar 7, 2022
- 1 min
How to tell Google Chrome to change the extension of the file in NodeJS?
res.setHeader('Content-Type', 'application/pdf') this will automatically download or show the file in pdf format directly. If We want to...
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ashutoshsharma52
- Mar 7, 2022
- 3 min
How to Handle Files Correctly in Node Js? || Upload and Download a file in Node Js.........
In this we will learn how can we can allow our users to upload a files and how we can handle them in our server side and what are the...
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ashutoshsharma52
- Mar 7, 2022
- 2 min
Status Codes
When returning responses, it can make sense to also set an appropriate Http status code – this lets the browser know what went wrong •...
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ashutoshsharma52
- Mar 7, 2022
- 1 min
Error Handling Middleware
Make sure that the CSRF Token code is on the top of the other Universal code such as the error 500 page, 400 error page or the session...
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