SQL | DROP, TRUNCATE
DROP DROP is used to delete a whole database or just a table.The DROP statement destroys the objects like an existing database, table, index, or view. A DROP statement in SQL removes a component from a...
View ArticleSQL | Constraints
Constraints are the rules that we can apply on the type of data in a table. That is, we can specify the limit on the type of data that can be stored in a particular column in a table using constraints....
View ArticleSQL | Comments
As is any programming languages comments matter a lot in SQL also. In this set we will learn about writing comments in any SQL snippet. Comments can be written in the following three formats: Single...
View ArticleSQL | GROUP BY
The GROUP BY Statement in SQL is used to arrange identical data into groups with the help of some functions. i.e if a particular column has same values in different rows then it will arrange these rows...
View ArticleSQL | Views
Views in SQL are kind of virtual tables. A view also has rows and columns as they are in a real table in the database. We can create a view by selecting fields from one or more tables present in the...
View ArticleSQL | Date functions
In SQL, dates are complicated for newbies, since while working with database, the format of the date in table must be matched with the input date in order to insert. In various scenarios instead of...
View ArticleSQL | Functions (Aggregate and Scalar Functions)
For doing operations on data sql has many built-in functions, they are categorised in two categories and further sub-categorised in different seven functions under each category. The categories are:...
View ArticleSQL Interview Questions
What is SQL? SQL stands for Structured Query Language. It is a language used to interact with the database, i.e to create a database, to create a table in the database, to retrieve data or update a...
View ArticleSQL | INTERSECT Clause
The INTERSECT clause in SQL is used to combine two SELECT statements but the dataset returned by the INTERSECT statement will be the intersection of the data-sets of the two SELECT statements. In...
View ArticleHow to prepare for Google Kickstart – a CodeJam competition?
Google Kickstart, formerly known as APAC is a test designed to hire people who are looking for a career in Google. The major difference between… Read More » The post How to prepare for Google Kickstart...
View ArticleMust Do Coding Questions for Companies like Amazon, Microsoft, Adobe, …
As the placement season is back so are we to help you ace the interview. We have selected some most commonly asked and must do… Read More » The post Must Do Coding Questions for Companies like Amazon,...
View ArticleMust Do Coding Questions Company-wise
Topic : Amazon Microsoft Adobe Oracle D E Shaw Directi Qualcomm MAQ Software Yahoo Accolite Walmart Labs Samsung Paytm Ola Cabs Flipkart SAP Labs VMware… Read More » The post Must Do Coding Questions...
View ArticleTop IT Certifications
In the recent days, we often find interviewers asking us that have you done any certification. If you are having any certification in your resume,… Read More » The post Top IT Certifications appeared...
View Articlegrep command in Unix/Linux
The grep filter searches a file for a particular pattern of characters, and displays all lines that contain that pattern. The pattern that is searched… Read More » The post grep command in Unix/Linux...
View ArticleRegular Expression in grep
Prerequisite: grep Basic Regular Expression Regular Expression provides an ability to match a “string of text” in a very flexible and concise manner. A “string… Read More » The post Regular Expression...
View ArticleSed Command in Unix
SED command in UNIX is stands for stream editor and it can perform lot’s of function on file like, searching, find and replace, insertion or… Read More » The post Sed Command in Unix appeared first on...
View ArticleImplementation of Stack in JavaScript
In this article, we would be implementing Stack Data Structure in Javascript. Stack is a very useful data structure and has a wide range of… Read More » The post Implementation of Stack in JavaScript...
View ArticleJavaScript Basic Array Methods
It’s recommended to go through Arrays in JavaScript . We would be discussing the following array function: Array.push() : Adding Element at the end of… Read More » The post JavaScript Basic Array...
View ArticleImplementation of Queue in Javascript
In This article, we would be implementing Queue data structure in javascript. A Queue works on the FIFO(First in First Out) principle. Hence, it performs… Read More » The post Implementation of Queue...
View ArticleImplementation of LinkedList in Javascript
In this article, we would be implementing LinkedList data structure in Javascript. LinkedList are dynamic data structure as we can add or remove element at… Read More » The post Implementation of...
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