Group By include having and where clause in SQL Server

Question

How can we implement Group By include having and where clause in SQL Server and which scenario these are required for Analytics reports

Sreenath Kappoor · Answer

Hi Kiran, CREATE TABLE Articles ( ArticleID INT PRIMARY KEY, AuthorID INT, Category VARCHAR(50), PublishedDate DATE, Community VARCHAR(50) ) INSERT INTO Articles (ArticleID, AuthorID, Category, PublishedDate, Community) VALUES (1, 101, 'Technology', '2024-02-01', 'c-sharpcorner'), (2, 102, 'Health', '2024-03-10', 'geeks for geeks'), (3, 103, 'Technology', '2024-02-15', 'c-sharpcorner'), (4, 104, 'Lifestyle', '2024-05-21', 'geeks for geeks'), (5, 105, 'Technology', '2023-12-30', 'c-sharpcorner'), (6, 106, 'Health', '2024-07-15', 'geeks for geeks'), (7, 107, 'Technology', '2024-09-01', 'c-sharpcorner'), (8, 108, 'Health', '2024-10-20', 'Medium'), (9, 109, 'Technology', '2024-11-05', 'c-sharpcorner'), (10, 110, 'Lifestyle', '2024-01-10', 'Medium'), (11, 111, 'Health', '2024-02-25', 'c-sharpcorner'), (12, 112, 'Technology', '2024-04-18', 'Medium'); select * from Articles ArticleID AuthorID Category PublishedDate Community 1 101 Technology 01-02-2024 c-sharpcorner 2 102 Health 10-03-2024 geeks for geeks 3 103 Technology 15-02-2024 c-sharpcorner 4 104 Lifestyle 21-05-2024 geeks for geeks 5 105 Technology 30-12-2023 c-sharpcorner 6 106 Health 15-07-2024 geeks for geeks 7 107 Technology 01-09-2024 c-sharpcorner 8 108 Health 20-10-2024 Medium 9 109 Technology 05-11-2024 c-sharpcorner 10 110 Lifestyle 10-01-2024 Medium 11 111 Health 25-02-2024 c-sharpcorner 12 112 Technology 18-04-2024 Medium I have a total of 12 articles: 6 on C# Corner, including 1 article in 2023, 3 on Geeks for Geeks, and 3 on Medium. We can fetch data by filtering articles published in 2024, grouping them by community, and including only communities with more than 5 articles. SELECT Community, COUNT(ArticleID) AS ArticleCount FROM Articles WHERE YEAR(PublishedDate) = 2024 GROUP BY Community HAVING COUNT(ArticleID) > 3 We have one and only answer: c-sharpcorner. Community ArticleCount c-sharpcorner 5

Shubham Sidnale · Answer

To use GROUP BY with WHERE and HAVING in SQL Server: WHERE : Filters rows before grouping . GROUP BY : Groups data by specific columns. HAVING : Filters groups after aggregation . Example: SELECT CategoryID, COUNT(SaleID) AS TotalSales, SUM(SaleAmount) AS TotalAmount FROM Sales WHERE SaleDate >= '2025-01-01' AND SaleDate 1000; -- Filters groups after grouping Key Points: WHERE : Use to filter data before grouping (e.g., sales in January). GROUP BY : Use to group data (e.g., sales by category). HAVING : Use to filter groups after grouping (e.g., only categories with sales > $1,000). When to Use: WHERE : Narrow down raw data (e.g., only this month’s sales). GROUP BY : Summarize data (e.g., total sales per category). HAVING : Focus on specific groups (e.g., high-performing categories).

Group By include having and where clause in SQL Server

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