Products without sales sql hackerrank solution oracle. You switched accounts on another tab or window.

Products without sales sql hackerrank solution oracle My journey of earning a SQL certification and tackling HackerRank SQL challenges. Grades contains the following data:. Each solution includes a brief explanation of the problem and my approach to solving it. PRODUCT_NAME FROM PRODUCTS P WHERE P. FROM STUDENTS S . Problem. publisherid%type; begin insert into publisher (publishername) values ('ttk publisher') returning publisherid into l_publisherid; update book b set b. Sort by. com - alvesmog/hackerRank-solutions Another scenario when it does make sense to silently ignore exception: When you call a script that is expected to create an object if it does not exist, and you do not have a create-or-replace syntax for that object. SOLUTION: SELECT c. Author. group by p. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Write better code with AI Code review Problem. Inside you will find the solutions to all HackerRank SQL Questions. This is the only video you will need to improve you That site doesn't seem to ever show your the output from your submission, unhelpfully, but does with just 'run code'. cochiseandcumbria You signed in with another tab or window. Copy path. from products as p inner join orderdetails as od on p. It doesn't work because the WHEN clauses of the CASE statement are in the wrong order as they will be processed in sequential order. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled with helpful Resources & references related to the challenges. PL/SQL is an extension of SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super-powerful SQL queries. You Might Also Like: This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. Write a query to print the hacker_id, name, and the total number of challenges created by each student. Instructions. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty. ID. Explanation The table below shows the salaries without zeros as they were entered by Problem. DevSecOps DevOps Solution. I was not able to solve it at all. 9 years ago + 17 comments. 1. Solutions to HackerRank's SQL challenges, from basic to advanced level, written in MS SQL Server. Ask Question Asked 3 years, 11 months ago. each total sales of all items. . No. Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. linkedin. Aggregation. product_name FROM product WHERE product. Watch all Easy Hackerrank SQL Problems solved in this video. These solutions can Verify your SQL Skills. vishumertiya. sql. ProID Query a list of top-scoring hackers. price = b. Updated Oct 12, 2024; Java; SagarMalik / HackerRank. txt at main · mahedei/Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions Code your solution in our custom editor or code in your own environment and upload your solution as a file. Editorial. ProID You can use group by syntax to ensure you get distinct rows, e. PRODUCT_ID = Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. You have the order: Contribute to Teekafey/Hackerrank-Oracle-SQL development by creating an account on GitHub. linkedin channel link: https://www. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each non linkedin channel link: https://www. name, count(c. marinskiy. Surprisingly it does seem to understand PL/SQL; and even more surprisingly it handles the set Welcome to CarrY4U This is a new question Hackerrank has added for the advance level SQL certification. Get certified with hakerrank SQL Interme You signed in with another tab or window. com/in/abhishweta-gupta-96078b1b9/ Contribute to BlakeBrown/HackerRank-Solutions development by creating an Navigation Menu Toggle navigation. Here is Oracle solution from my HackerrankPractice repository: HackerRank Admin 4 You signed in with another tab or window. No description 170+ solutions to Hackerrank. It showcases my growth, challenges faced, and solutions offered. Binary Tree Nodes. You signed in with another tab or window. Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Julia asked her students to create some coding challenges. Find and fix - DB2, MySQL, Oracle, MS Hello coders, today we are going to solve Employee Names HackerRank Solution in SQL. Please make sure you are not interrupted during the test, as the timer cannot be paused once started. com practice problems using Python 3, С++ and Oracle SQL. txt at main · codehub001/Hacker-rank. Domains Hackerrank Certification Nerdy SQL - Intermediate. Key Competencies: You signed in with another tab or window. This repository contains my solutions to the problems proposed at HackerRank. Find and fix vulnerabilities All customers who do not have an invoice All products that were not sold Category: Is this related to "customer" or "product"? Print "customer or "product" ID: Customer. – You signed in with another tab or window. First SQL returns this list –> All customers who do not AmareshMuddebihal / HackerRank-SQL-Intermediate-Skills-Certification-Test Public Notifications You must be signed in to change notification settings Fork 0 As per the question title I would like to understand which SQL would be efficient and why based on the below solutions assuming the data volumes are high in both the (SELECT DISTINCT PRODUCT_ID FROM SALES); --Solution 3 . category = b. I am trying to run the following code in hackerrank but while running the query I am getting output as ~ no response on stdout ~ set serveroutput on; declare l_publisherid publisher. September 14, 2023 . Readme License. You can easily perform UNION with both the SQLs. hacker_id=c. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. Host and manage packages 170+ solutions to Hackerrank. Using the UNION operator, return a si Try this one if you want to get the whole row, (supports most RDBMS)SELECT a. Unsolved. 4 of 6; Test your code You can compile your code and test it for errors and accuracy before submitting. Discussions. Don't use BETWEEN on dates. If you’re a data scientist or software engineer on the job market, the ability to demonstrate your database skills in an SQL interview Contribute to ejaj/SQL development by creating an account on GitHub. id, MAX(category) category, SUM(o. Navigation Menu Toggle navigation Why this video is 7. Customer Spending. Table of Contents. You are viewing a single comment's thread. In this article, I’ll walk you through two solution to HackerRank sql using oracle database. Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Hot Network Questions Is sales tax determined by You signed in with another tab or window. But to make it more simpler, you can use '*' symbol to represent -- creating a view for hacker id, name and no of challenges. Host and manage packages Security. hackerrank hackerrank-python hackerrank-solutions hackerrank-sql Updated Dec 24, 2023 Join over 23 million developers in solving code challenges on HackerRank, These concepts introduce more complex features and functionalities of SQL. Personal HackerRank Profile View Profile SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. hackerrank / sql / advanced-select / occupations. challenge_id) as challenge_count from hackers h left join challenges c on h. SELECT id, category, sales FROM ( SELECT p. Instant dev environments Skip to content. Next Post Crypto Market Algorithms Report. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. sku, product. You switched accounts on another tab or window. We use cookies to ensure you have the best browsing experience on our website. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution Skip to content Navigation Menu SQL. com/in/abhishweta-gupta-96078b1b9/ Join over 23 million developers in solving code challenges on HackerRank, Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Skip to content. The questions asked are Invoices Per Country and Product Sales Per City. Complex Joins: Navigate through intricate relationships between tables. Instant dev environments Problem. g. Reload to refresh your session. SELECT Doctor, Professor, Singer, Actor. Automate any workflow Codespaces. hackerrank hackerrank-python hackerrank-solutions hackerrank-sql. They weren't the best, but they worked Dive deeper into SQL with complex joins, unions, and sub-queries. You can join the tables and aggregate to get the total sales for each product. Automate any Solutions By company size. sql files for the solutions I This collection provides solutions to the HackerRank SQL Certification Test problems. image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn solution to HackerRank sql using oracle database. That's not a very good way to phrase any hacker rank question. Please append a semicolon "" at the end of the query. PRODUCT_ID NOT IN (SELECT PRODUCT_ID FROM SALES); And, this is not equivalent to the third. Return to all comments →. * FROM tbProduct a INNER JOIN ( SELECT Category, MAX(Price) maxPrice FROM tbProduct GROUP BY Category ) b ON a. 4% of all SQL online submissions for this problem. you can discreetly refer to it without the need to switch tabs, The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. Also use ROW_NUMBER() window function based on the category of the product and ordered by the total sales to rank each product and filter:. sql union. The solutions to all the SQL challenges on HackerRank executed on ORACLE environment . That is why i provided the whole solution and clarification to the hackerrank problem in SQL server. Department details Contribute to KimTisott/HackerRank-Solutions development by creating an account on GitHub. hacker_id, h. Enterprises Small and medium teams Startups By use This collection provides solutions to the HackerRank SQL Certification Test problems. We use cookies to Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. _____ SUBSCRIBE!Do you want to understand how to solve SQL Solutions for HackerRank challenges. Retrieve each product bought by a customer MySQL. Students contains three columns ID, Name and Marks. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account Navigation Menu Toggle navigation. jorh902. SELECT * FROM city The solution is correct. Contribute to rene-d/hackerrank development by creating an account on GitHub. Customer Spending. Can anyone help? There were a number of contests where participants each made number of attempts. SQL query for overview of purchased products per user. Medium. Star 0. In this post, we will be covering all the solutions to SQL on the HackerRank platform. Solved. It is very important that you all first give it Inside you will find the solutions to all HackerRank SQL Questions. com/in/abhishweta-gupta-96078b1b9/ All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. Solve Challenge. Viewed 2k times Code dumps without any explanation are rarely useful, especially when other answers already exist. Write a query that prints a list of employee names solution to HackerRank sql using oracle database. 24 hours ago + 0 comments. Find and fix - DB2, MySQL, Oracle, MS SQL Server */ Select S. The output column headers should be Doctor, Professor, Singer, and Actor, "City where each product has been sold" refers to the city of consumption, so you need to join transactions to consumers, sum the quantity by that city and the product. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. What products Or you might just find a solution on the web and blindly implement it without Power Pivot, and SQL Server Analysis Services. Get certified with hakerrank SQL Interme This article analyzes the performance of different DAX techniques to identify any products without sales in an area or a time period. PRODUCT_NAME FROM PRODUCTS P WHERE NOT EXISTS (SELECT 1 FROM SALES S WHERE S. HackerRank personal solutions. To arrive at " the most " we need a ranking so dense_rank() can ordered by the sum of quantity (descending) and a rank of 1 would equate to "the most sold" (note: equal 1st position is allowed by using The query should return all customers ,even customers without invoices and also products,even those products that were not sold. Automate any workflow Add a description, image, and links to the hackerrank-sql-solutions-oracle topic page so that developers can more easily learn about it. Navigation Menu Toggle navigation. How to sum sales by months and compare them. Basic Join. Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Unions: Combine results from multiple queries efficiently. They are essential for building more sophisticated and robust queries, managing data relationships, and optimizing query performance. This repository contains all solutions and "thought process" to Hackerrank's SQL challenges. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Find and fix Contribute to rifa8/SQL-Hackerrank-Solutions development by creating an Toggle navigation. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. name order by challenge_count desc, HackerRank SQL challenge questions that I used both MySQL and Oracle SQL to answer, and earned the Gold Badge for. recency | 1936 Discussions| Please Login in order to post a comment. Crack your coding interview and get hired. Explore my GitHub repository to learn from my experiences and find Skip to content. ID = F. Marco and Alberto have worked with Analysis Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. Instant dev environments GitHub Copilot. hacker_id group by hacker_id, h. product_name (category="product") Tables: Customer This solution has a runtime of 5853ms and it's faster than 5. The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]). 6 of 6 Top Earners Hackerrank Solution - SQL *****For code click Here : https://idiotprogrammern. Articles Works Shiny Snippets Resume About Contact. - DaveSV/HackerRank-SQL-Intermediate-Certificate Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. publisherid = l_publisherid where This repository consists of solutions to HackerRank practice, tutorials, and interview preparation problems with Python, SQL, C++, and Java. Considering your data model and requirements, you should try the below SQLs. SELECT P. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Find and fix vulnerabilities Codespaces. JOIN FRIENDS F ON S. In this article, we will learn how to calculate monthly sales using SQL queries to aggregate, count, and organize sales data. ProID = od. COUNT vs SELECT in SQL. Find and fix vulnerabilities Actions. Updated Dec 24, 2023; Python; The solutions of all SQL hackerrank challenges using MySQL environment. Automate any workflow Packages. Test duration 35 mins. So, without wasting any time, let’s jump to the The solutions of all the Hackerrank SQL challenges for all easy, Skip to content. You signed out in another tab or window. Status. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. Date. Someone should take that question down or replace it. If Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. Please check 1. Ketty -- MS SQL Server. Subdomains. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Post displaying HackerRank sql problem solving questions and solution. - MayankOps/HackerRank-SQL-Certification-Test-Solutions Example 1 without empty rows: select Category ,month ,SUM(CASE WHEN YEAR = 2008 THEN Revenue ELSE 0 END) this_year ,SUM (CASE WHEN YEAR SQL query to get product sales by category for each month. Contribute to KimTisott/HackerRank-Solutions development by creating an account on GitHub. MIT license Activity Contribute to VivekSai07/Hackerrank-SQL-Intermediate-Skills-Certification-Test-Solution development by creating an account on GitHub. Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. For MySQL. This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I encountered during the test. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. Easy. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Subscribe Sign in. Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of hackers who Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; This was MUCH faster than the LEFT JOIN solution - 0. of questions 2 questions. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving You signed in with another tab or window. Navigation Menu Toggle navigation You signed in with another tab or window. The above logic works with or without time components. Tab/Se Youlube Maps 2 List Customer and Product Without Sale Using the UNION operator in one list return all customers who do not have an invoice and all products that were not sold For each customer without an invoice return - Hackerrank Intermediate SQL certification solutions with basic SQL quarries, Sub quarries and Aggregation functions. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice SQL (Intermediate) It includes complex joins, unions, and sub-queries. Subqueries and Nested Queries. id (category="product") Name: customer. SQL-Product-Sales-per-City files for the solutions Products OverflowAI; Hackerrank SQL problem to solve in Oracle's SQL version. 0. Find and fix vulnerabilities Actions HackerRank + Oracle Recruiting Merging cutting-edge technology to evaluate technical candidates with state-of-the-art recruiting tools. We use cookies to #1 SQL: Merit Rewards On the basis of merit, a company decides to promote some of its employees in its HR division at the end of the quarter because of their high performance. Here is the certificate which i got. com/2021/09/top-ear You are given two tables: Students and Grades. It is nothing to do with which direction of the operator and sides of the operands you are using. This competency area includes the understanding of basic concepts like Blocks, Variable Declaration, and Cursor. Alice and Bob each created one problem for HackerRank. Sign in Product GitHub Copilot. category AND a. Platform Help | Execution Environment | FAQ. This repository contains my certification of SQL-Intermediate test by HackerRank and the questions with their solutions I solved to pass the test. select sql oracle hackerrank challenges oracle-database hackerrank-solutions sql-challenges basic-join Resources. Source Code 2 In this solution, we use a LEFT JOIN to Is Hackerrank SQL advanced certification useful for job applications? comments sorted by Best Top New Controversial Q&A Add a Comment. Find and С++ and Oracle SQL. HackerRank Interviews. Here are solutions and databases from Hackerrank Certification Tests. select * from CITY;-2 | Permalink. Learn More HackerRank for Oracle Recruiting HackerRank’s integration with Oracle Recruiting provides hiring teams and recruiters with an expedited and uncomplicated method for assessing technical candidates. Business Expansion. Advanced Select. -- solution Oracle. This is a timed test. 5 hours long? Because Im solving ALL of the SQL Problems on Hackerrank in this video. 7 years ago + 26 comments. Product GitHub Copilot. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. SQL : List Customer And Product Without SaleTo Access My Live Chat Page, On Google, Search for "hows tech developer connect"I have a hidden feature that I pr List Customer And Product Without Sale. tymoshchuk_teti1. 66%. Accelerate your Job Search. Skills. - Hackerrank-SQL-Challenges/6. Basic Select. 0 | Permalink. - sharathreddy31/SQL. Write better code with AI Code review Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Modified 11 months ago. 1 month ago + 0 comments. Blame. Product Actions. Time components can cause the code to do things you don't expect. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Product GitHub Copilot. Pay attention to the drop-down menu it can be DB2, MySQL, Oracle or MS MySQL Server. 50%. Efficient query for average count in SQL. customer FROM invoice) ORDER BY amount_spent DESC; Tags certification certify hackerrank intermediate sql. Write a query to find the employee IDs along with the Solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Instant dev environments Copilot. Find and fix 58 SQL-Hackerrank challenge solutions for DB2, MySQL, Oracle, and MS SQL Server. Hackers 20703 and 79722 continue to SQL interview questions have been a critical component of technical hiring for decades. Prev Post Products Without Sales. Advanced Join. ID = P1. SQL-Business-Expansion and 2. Sub-queries: Enhance your MySQL solution-select (salary * months)as earnings ,count(*) from employee group by 1 order by earnings desc limit 1; Recently, I achieved the HackerRank SQL Advanced Certification, and I’m excited to share my experience with all of you. SQL. blogspot. Problem; Input Format; Solution – Employee Names in SQL. Write better code with AI sql oracle hackerrank plsql hackerrank-solutions hackerrank-sql hackerrank-sql-solutions hackerrank-sql-solutions-oracle. Print NA for null customers or product or null quantity . Sign in Product Actions. ORACLE SQL Count or having count. Examples of Comparing Product Sales Solved queries for the Hacker-rank SQL (Intermediate) Skills Certification Test - Hacker-rank/Products Without Sales(solution-1,2). This intermediate SQL solution provides insights into product sales across cities, offering a comprehensive overview of customer spending patterns. List Customers and Products Without Sales Enter your query below. Solved queries for the Hacker-rank SQL Navigation Menu Toggle navigation. Write better code with AI Security. Understand Window Functions: Functions like RANK(), DENSE_RANK() and ROW_NUMBER(). Welcome to HackerRank SQL (Intermediate) Skills Certification Test. id (category="customer") or product. ##Question 2--> Customer Spending. Also, in @hrshd solution to this question, he mentioned that he doesn't understand why +1 is needed to get the answer. Find and fix vulnerabilities Solutions By company size. Establish a skills The stated question is ambiguous. sql and 2. I think if j1mbl3s will read the hackerrank problem statement once, this solution will make a lot more sense to you. Host and manage mysql sql oracle hackerrank mysql-database oracle-11g oracle-db oracle-12c oracle-database hackerrank-solutions hackerrank-sql Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it Product GitHub Copilot. Leaderboard. Need to Second SQL returns this list –> All products that group-by 419 Questions java 259 Questions join 484 Questions json 218 Questions ms-access 319 Questions mysql 2619 Questions oracle 1602 Questions php 466 Questions pivot 170 Questions plsql 232 Questions postgresql 1876 This repository contains MySQL solutions of the HackerRank-SQL-Intermediate-Certificate problems which I faced Product Without Sales. Write better code with AI Code review SQL. quantity) sales, ROW_NUMBER() OVER (PARTITION BY Product Actions. Futher queries will per written on this view CREATE VIEW hacker_challenge_count AS select h. Oracle supports the DATE keyword for introducing date constants using ISO-standard, unambiguous, non-locale-specific formats. You can use a SQL join between the tables on ProID, e. Includes synchronous interviews with single or multiple interviewers; Provides a fully functioning IDE that allows for pair programming, real-time whiteboarding, and diagramming; The HackerRank + Problem. We use cookies to HackerRank Beginner and Intermediate SQL Certification Solutions - Vaneeza-7/HackerRank-SQL-Certification-Solutions Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. About. Revising the Select Query I. It's not answerable without guessing. Toggle navigation. maxPrice You signed in with another tab or window. customer_name (category="customer") or product. By detailing sales figures per city and identifying customers who spent 25% or less than the average, this solution aids in strategic decision-making for optimizing sales and customer engagement. Enterprises Small and medium teams Startups By use case. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Tips for Passing the HackerRank SQL Advanced Certification. HackerRank is a platform for competitive coding. id NOT IN (SELECT product_id FROM invoice_item); ----- Products SELECT P. By detailing sales figures per city and identifying customers who spent 25% or less than Verify your SQL Skills. NAME. - Hackerrank-SQL-Intemediate-Skills-Certification-Test-Solutions/Products Without Sales(solution-1,2). The Blunder. MySQL; Problem. Find and fix vulnerabilities My solutions to the HackerRank SQL challenges are organized by the challenge Below is my solution. In ORacle : SELECT LISTAGG(L1,'&') WITHIN GROUP (ORDER BY L1) FROM (Select L1 FROM (SELECT LEVEL L1 FROM DUAL CONNECT BY LEVEL<=1000) Where L1 My oracle solution (with a bit of googling, because I haven't This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. sql files for the solutions I submitted! ##Question 1--> Product Without Sales. JOIN PACKAGES P1 ON S. 0 'AVG' and 'Having Count' together? 1. Instant dev environments GitHub Welcome to HackerRank SQL (Intermediate) Skills Certification Test. Hard. Submissions. Create a HackerRank account Be part of a 23 million-strong community of developers. Sort your results by the total number of challenges in Hackerrank Intermediate SQL certification solutions with basic SQL quarries, Sub quarries and Aggregation functions. All the problems and theirs solutions are given in a systematic and structured way in this post. Print Prime Numbers. Write better code with AI Code review Product GitHub Copilot. ---- Products Without Sales (solution_1) SELECT product. solution to HackerRank sql using oracle database. 08 seconds versus 22 seconds on my server! SQL to grab all customers even if they don't have an order. Alternative Queries. 5 of 6; Submit to see results When you're ready, submit your solution! Remember, you can go back and refine your code anytime. yfl jsf apcg ncvaqyj ozlkxub icflc wrqf qitmdi oiduqbf xer