Identifying the Latest Date for Each ID Across Multiple Tables Using Distinct on Select

Understanding SQL Profiles in Oracle: Mitigating the TABLE ACCESS FULL Issue

Database Design for Scalability and Maintainability: Balancing Normalization and Denormalization Strategies for a Question/Answer/Blog Site

How to Extract Year Values from Date Strings in SQL

Assigning Invoice IDs to Uninvoiced Entries Using Window Functions in SQL

Understanding Postgres Query Logic: The Importance of Using Parentheses in Controlling Multiple Where Clauses

Understanding Inner Joining Three Tables and Selecting One Column from Two of Them: Resolving Column Name Discrepancies and Improving Query Performance

How to Concatenate Two JSON Arrays in MySQL Using the json_merge_preserve Function

Alterating Column Types in Amazon Redshift: Understanding the Limitations and Workarounds

Calculating Customer Re-Order Percentage in SQL Using Lag Function and Case Logic.