SQL Tutorial: Retrieve Specific Rows with OFFSET & ROW_NUMBER - Top 2 Methods Compared!
In this video, we'll dive into two powerful SQL methods for retrieving specific rows from a database table. Whether you're looking to extract the 4th to 7th records or any other range, we'll show you how to do it using the OFFSET and FETCH method as well as the ROW_NUMBER method.
What You'll Learn:
How to use the OFFSET and FETCH method to retrieve specific rows.
How to utilize the ROW_NUMBER function for more complex row selection.
The differences between these two methods and when to use each.
Perfect for beginners and seasoned developers alike, this tutorial will enhance your SQL skills and make data retrieval a breeze. Don't forget to like, comment, and subscribe for more SQL tips and tricks!
--The finance department called one of the HR managers after discovering an error in the employee table data.
The HR manager called the data team to obtain records 4 through 7 from the workers table,
since only a small number of records were determined to be inaccurate.
Could you write a SQL query to assist the HR team?
drop table Employees
CREATE TABLE Employees (
EmpID INT PRIMARY KEY,
EmpName VARCHAR(100),
DeptID INT,
EmpSalary DECIMAL(10, 2)
);
INSERT INTO Employees (EmpID, EmpName, DeptID, EmpSalary)
VALUES
(1, 'John Doe', 101, 55000),
(2, 'Jane Smith', 102, 62000),
(3, 'Emily Davis', 101, 72000),
(4, 'Michael Brown', 103, 48000),
(5, 'Sarah Wilson', 102, 69000),
(6, 'David Johnson', 103, 50000),
(7, 'Chris Lee', 101, 73000),
(8, 'Anna Taylor', 102, 58000),
(9, 'James Moore', 103, 45000);
select * from Employees
--sql query to fetch records 4th to 7th
--Method1
select empid,empname,deptid,empsalary from
(select *, row_number() over(order by empid) as rownum
from Employees ) x
where rownum between 4 and 7
--Method2
select *
from Employees
order by empid
offset 3 rows fetch next 4 rows only
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