For most people troubleshooting SQL query performance problems is a necessity rather than a preference. Very often they are using a trial and error strategy to overcome those frustrating situations. U...
This zip file contains a Word doc that explains how you can use a backend API call in the my_codetester package to use Code Tester with a centralized code schema (summary: you need to tell Code Tester...
Q: Is there a way to understand why indexes aren't being used, even if they are referenced in the WHERE?
A: Not really. For example, suppose WHERE GENDER = 'M' and I know there is an index in the col...