Querying Active Users: How to Identify Returning Customers Within 7 Days of Their First Purchase

Accessing .NET Web Applications from IP Addresses: A Step-by-Step Solution

Understanding and Resolving the Error -101: Too Long or Complex Statement in IBM DB2 SQL RUN

Solving the SQL Split String Problem with SUBSTRING_INDEX Function

Improving SQL Queries: Strategies for Handling Redundancy in Conditional Logic Operations

Understanding Precision, Scale, and Data Type Precedence in SQL Server: Mastering Arithmetic Operators for Accurate Results

Understanding Value Out of Range: Underflow and How to Work Around It

Sorting and Filtering Dates with SQL: Two Approaches to Extracting First Day of Year and Sequence Number

Understanding Float Formatting in MySQL

Extracting New Users, Returned Users, and Return Probability from a Registration Log: A Multi-Query Solution