Deleting Rows Based on Age, Status, and Existence of Related Rows in PostgreSQL: A Practical Approach to Remove Incomplete or Old Data

Understanding the Limits of Pagination: A Guide to API Design for Scalable Data Services

Displaying Strings in Vertical Form Using Oracle's Regular Expression Function

Understanding SQL Aggregate Functions: Avoiding Incorrect Results with GROUP BY Clauses

Understanding SQL PIVOT Tables for Displaying Multiple Dates

Understanding Distinct and Grouping in SQL Queries: Mastering the Power of DISTINCT ON Clause

Understanding the Limits of Casting varchar Values in SQL Server: Best Practices and Alternatives

Finding the Last Change Value: A Comprehensive Guide to Using LAG and LEAD in SQL Queries

Oracle Query to List Merchants with Total Transactions Amount

Mastering Procedure Parameters in Oracle SQL: Workarounds for IF Statements