Creating View
SQL Views - SQL Interview Question
SQL Views is the question that is being asked in many interviews including companies like Paytm, Google, Facebook, etc. What are SQL Views? There are several tables in our database for sto…
SQL Views is the question that is being asked in many interviews including companies like Paytm, Google, Facebook, etc. What are SQL Views? There are several tables in our database for sto…
As part of a project today, I had to import a sizable SQL dump into a database (almost 90 GB). I encountered a few snags that prevented the import while doing this using the traditional t…
Customers Who Never Order is a very easy and simple question which is for beginners. This question will be solved with subqueries. Let's take the SQL table schema of Customers: CREATE…
Game Play Analysis I is a very important question that is being asked in many company interviews. Before getting started first we have to understand the question properly. for that, we n…
Combining two tables is a very simple and easy SQL question that is being asked in many FAANG companies. There are two tables containing data related to one column. SQL Schema for the fi…
A common table expression (CTE) is a temporary result set that stores intermediate results. They are an incredibly powerful tool that SQL developers can use to solve complex problems and …
The rising Temperature question is asked in many companies some of the big names are Google, Facebook, etc. Lets have a table named weather containing data. Here is the SQL Schema: CREATE…
Customer Placing the Largest Number of Orders is the question that is asked in interviews on Facebook, Google, Amazon, etc. This is a very interesting question and you should try this b…
Delete Duplicate Emails is an easy and tricky question asked in many interviews. We are going to solve this question with very simple self-joins. Let's start with having a table named…
Employee earning more that their managers is very simple and easy question asked in many interviews. This is similar to our last question Delete Duplicate Emails. Lets start with SQL Sche…
Classes with more than 5 students is the question asked in many interviews and listed on leetcode at 596. Let's start with SQL Schema for the table named Courses: CREATE TABLE Cours…
Actors and Directors Who Cooperated At Least Three Times is the question asked in many interviews and listed on leetcode at 596. Let's start with SQL Schema for the table named cine…
Not Boring Movies is the question asked in many interviews and listed on leetcode at 596. Let's start with SQL Schema for the table named cinema: Table Cinema: CREATE TABLE cinema (…
Sales Person is the question asked in many interviews and listed on leetcode at 596. Let's start with SQL Schema for the table named salesPerson, company, and orders: Table SalesPer…
Email Duplicate is the question asked in many interviews to get the output we go through step-by-step discussion and understand the output. Let's have a SQL Schema first containing so…
The big Countries interview question is very easy and asked in many interviews for beginners. Let's start with the table schema of World: CREATE TABLE World (name varchar(255), cont…
Find Customer Referee is a very interesting problem of leetcode 584 and is also asked in many interviews with big to small companies. We will be going to solve this query. Let's take t…
An aggregate function can be used to perform calculations on a set of values, which will then return a single value. We can use an aggregate function either with the GROUP BY clause or wi…
The CASE statement is similar to the IF ELSE statement in other programming languages. We can use this to get or show particular values based on certain conditions. Example: Take a table…
Swap Salary is a tricky question but we have an explanation for this and we will be going to solve this in very easy steps. We are going to swap all the sex from 'm' to 'f' …