Creating a Stored Procedure for Paginated Results
Create a Stored Procedure with Pagination
Write a SQL query to create a stored procedure that retrieves paginated results from a table.
Solution:
-- Create a stored procedure for paginated results.
CREATE PROCEDURE GetPaginatedEmployees
@PageNumber INT, -- Input parameter for the page number.
@PageSize INT -- Input parameter for the number of rows per page.
AS
BEGIN
SELECT *
FROM Employees
ORDER BY EmployeeID
OFFSET (@PageNumber - 1) * @PageSize ROWS
FETCH NEXT @PageSize ROWS ONLY;
END;
Explanation:
- The goal is to create a stored procedure that retrieves a subset of rows (pagination) from the Employees table based on user-defined page size and page number.
- OFFSET and FETCH : Implements pagination by skipping rows and fetching a specific number of rows.
- ORDER BY : Ensures consistent ordering for paginated results.
- Pagination improves performance and usability when working with large datasets by retrieving only a portion of the data at a time.
- For example, in web applications, you might use this procedure to display employees in chunks (e.g., 10 per page) for better user experience.
1. Purpose of the Query :
2. Key Components :
3. Why use Pagination? :
Real-World Application :
Additional Notes:
- Always include an ORDER BY clause to ensure consistent results across pages.
- Use this exercise to demonstrate how to handle large datasets efficiently.
For more Practice: Solve these Related Problems:
- Write a SQL query to create a stored procedure that retrieves paginated results sorted by a user-specified column.
- Write a SQL query to create a stored procedure that allows users to define both page size and sort order for paginated queries.
- Write a SQL query to create a stored procedure that supports filtering options along with pagination for large datasets.
- Write a SQL query to create a stored procedure that combines pagination with grouping and aggregation functions.
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