SQL Server: Inconsistent Results with Conditional Aggregation in Group By Clause
I'm working with an scenario with my SQL query that uses conditional aggregation. I expect to get counts of different categories, but the results seem inconsistent across different groups. Here’s what I have: ```sql SELECT Department, SUM(CASE WHEN Status = 'Active' THEN 1 ELSE 0 END) AS ActiveCount, SUM(CASE WHEN Status = 'Inactive' THEN 1 ELSE 0 END) AS InactiveCount FROM Employees GROUP BY Department; ``` In my `Employees` table, I have the following sample data: | Department | Status | |------------|----------| | Sales | Active | | Sales | Inactive | | HR | Active | | HR | Active | | HR | Inactive | | IT | Active | | IT | Inactive | | IT | Active | When I run the query, I get: | Department | ActiveCount | InactiveCount | |------------|-------------|----------------| | Sales | 1 | 1 | | HR | 2 | 1 | | IT | 2 | 1 | I expect the counts to reflect the actual number of records. Why am I seeing this discrepancy, particularly in the `Sales` department? I've tried running the query without the aggregation and the counts match the rows correctly, but the conditional aggregation seems to skew the results. I also verified that there are no duplicate rows in the `Employees` table. Is there something in my query or SQL Server configuration that could be affecting this? I'm using SQL Server 2019.