Optimizing SQL Queries by Avoiding Sub-Queries in the WHERE Clause and Using Window Functions

Exporting Data from SQL Server Stored Procedures to CSV Files without SSIS Packages

Unpivot Two Columns and Group by Cohorts for Better Data Analysis

Mastering Conditional Aggregates in SQL Server: A Comprehensive Guide to Calculating Percentages

Querying Top Record Group Conditional on Counts and Strings in a Second Table: Optimizing Performance with COALESCE and Indexing

The Problem with CHARINDEX: Alternative Methods for Finding String Indices

Combining Tables with NULL Values: A Deep Dive into Cross Joining and Union

Understanding T-SQL Modify Column Operations: Best Practices for Efficient Data Management

How to Calculate Running Total of "Due" Jobs in SQL Server 2012: Recursive Queries and Cursors Compared

Identifying Records Repeating Within a Set Time Frame Since Their First Creation in SQL Using Self-Join Method