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Posted February 11, 2016 by Vishwanath Dalvi in Computer programming, Database, SQL Server
- Sqlpro Studio 1 0 335 – Powerful Database Manager Salary Template
- Sqlpro Studio 1 0 335 – Powerful Database Manager Salary Job
Based on what I have heard from friends and other online users and from my own personal experience, the most common job interview question for database programmers is “How do you find the highest salary in an employee table?”
Powerful applications to manage any SQL Server from 7.0 to 2019, Azure SQL Database, and SQL Server Compact Edition. MS SQL Maestro A comprehensive IDE for all DBAs and developers. Limit The Query To Display Only The Top 3 Highest Paid Employees.: Query « Oracle PL / SQL. Create table employee( empno integer primary key,lastname varchar2(20) not null,salary number(3) ); insert into employee(empno,lastname,salary) values(1,'Tomy',2); insert into employee(empno,lastname,salary) values(2,'Jacky',3); insert into employee(empno,lastname,salary) values(3,'Joey',4. Three Months Twelve Months (US$ in millions, except EPS) Ended Ended March 31, March 31, 2007 2006 2007 2006 Net sales $4,677 $3,531 $18,854 $15,288 GAAP operating income $75 $40 $374 $246 Adjusted operating income (1) $141 $104 $570 $470 GAAP net income $121 $43 $509 $141 Adjusted net income (1) $122 $98 $478 $417 Diluted GAAP EPS $0.20 $0.07.
This question tests a candidate’s knowledge of ranking functions, subqueries, common table expression (CTE) and basic SQL.
We will explore the answer with a series of scenarios and questions asked in relation to finding the highest, lowest, and nth highest salary.
Let’s create an employee table and populate it with some test data.
Query 1.1 Find the Employee with the Highest Salary
The query above uses the derived table concept, where the subquery with row_number ranking function assigns a unique sequential number (1,2,3. to N) to a salary which is ordered in descending order (highest to lowest). Thus, 1 will be assigned to the highest salary, 2 to the second highest salary, and so on, using the derived table to fetch the row with row_number assigned as 1.
Query 1.2 Find the Employee with the Highest Salary When There Is a Tie (Two employees both have the highest salary and the number is the same)
I am inserting one more employee whose salary matches the highest salary fetched using Query 1.1 to demonstrate this example.
Here we are deleting employee id 107 which we had inserted for the Query 1.2 demonstration.
In the query above, the Dense_rank function assigns the same consecutive rank number when there is a tie. Therefore, it assigns number 1 to both of the highest salaries (45,000), and both are returned using the derived table query with the salary_order = 1 filter.
Mac cleaner pro 1 5 gallon. Query 1.3 Finding the Employee with the Second Highest Salary
Here we are using the same logic used in Query 1.1 with the ROW_NUMBER() function, but we are using Salary_order = 2 to fetch second Highest salary.
Query 1.4 Finding the Employee with the Nth Highest Salary
Here we are using the same logic used in Query 1.1 and Query 1.3. Nth means you can specify any number, and the query will retrieve the salary at Nth number.
![Sqlpro studio 1 0 335 – powerful database manager salary template Sqlpro studio 1 0 335 – powerful database manager salary template](https://www.eurovps.com/blog/wp-content/uploads/2017/06/sequel-pro-e1499709242593.jpg)
Query 1.5 Finding the Employee with the Lowest Salary
To find the lowest salary, we are using Order by salary in ascending order, so the result is sorted in ascending order for salary (lowest to highest). Hence, the lowest salary will get row_number = 1 and so on. We are using the filter Salary_Order = 1 to retrieve the first lowest salary in the employee table.
Query 1.6 Finding the Employee with the Lowest Salary When There Is a Tie (Two employees both have the lowest salary and it is the same)
I am inserting one more employee whose salary matches the lowest salary fetched using the query above to demonstrate this example.
Here we are deleting the employee with 108 id which was inserted to demonstrate the query above. Yoink download.
To find the lowest salary with ties, we are using the dense_rank function which is the same as Query 1.2. The dense_rank function will assign consecutive numbers where there is a duplicate salary, so for the lowest salary (20000.00), it will assign the number 1 to both the salaries. Using the Salary_Order = 1 filter, we are able to retrieve both the lowest salary when there is tie using the dense_rank function.
Query 1.7 Finding the Employee with the Second Lowest Salary
Here we are using the same logic used in Query 1.3 with the ROW_NUMBER() function, but we are using Salary_order = 2 to fetch second lowest salary.
About Vishwanath Dalvi
Vishwanath Dalvi is a gifted engineer and tech enthusiast. He enjoys music, magic, movies, and gaming. When not hacking around or supporting the open source community, he is trying to overcome his phobia of dogs.
View more articles by Vishwanath Dalvi
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Sqlpro Studio 1 0 335 – Powerful Database Manager Salary Template
If you often need to work with multiple database types, you know the pain. Most database management systems only support one or a few, so you end up using multiple database managers, which defeats their purpose in the first place.
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Connect to a database of any format
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Create a new database query
Once you connect to your database of choice, you can type your custom query right in the editor and click “Run all” in the top-right corner to perform it. The table below would then respond to your function accordingly.
Run multiple database queries at once
SQLPro Studio also gives you the option to perform multiple queries (even if contradictory) at once and splits the view of your database to show you the results. Just type in the query in the text editor as usual and click “Run all.” The table underneath will then reflect the result for each query separately.
Effortlessly edit table data
Changing data in any cell is easy with SQLPro Studio. Just open the table you’d like to edit. Right-click on the row and choose “Edit selected row.” Then scroll through all the cells, find the one you need, type the change in the text editor, and click Accept.
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