Using Subqueries and Union Operators to Join Data from Multiple Tables in SQL

Understanding Scalar Functions in SQL Server and Storing Values from Parameters for Efficient Parameter Handling

Grouping Events by ClientId and Date in SQL: A Step-by-Step Guide

Understanding the Mysteries of NOT IN in SQL Server

Understanding SQL Joins: Why They May Not Always Give You the Correct Totals

Understanding the Risks of Dynamic Queries in SQL Server: Best Practices for Safe Coding

Locking a Stored Procedure and Updating Table Data in SQL Server: Preventing Duplicate Records with SERIALIZABLE Isolation Level

Conditional Aggregation for Multiple Rows with SQL Server: Simplifying Your Queries

Using SQL Server Functions for Flexible String Matching

Updating Multiple Conditions in SQL Server: Choosing the Right Approach