Course Outline
Quick Recap on Table Joins, Queries, and Basic Summary Functions:
- Review the concepts of primary keys and foreign keys to ensure data integrity for government databases.
- Differentiate between inner joins and outer joins to effectively combine data from multiple tables for government reporting.
- Understand the significance of link tables and self-joins in relational databases to support complex data relationships for government operations.
- Utilize WHERE and HAVING clauses to filter data and perform conditional aggregation, enhancing data accuracy for government analysis.
- Explore Common Table Expressions (CTEs) to define temporary result sets, improving query readability and efficiency for government applications.
- Incorporate sub-queries as columns within SELECT statements to achieve advanced data manipulation for government reporting.
- Master main summary functions such as COUNT, SUM, AVG, MIN, and MAX to support comprehensive data analysis for government decision-making.
- Learn to group data using the GROUP BY clause and apply filtering conditions with the HAVING clause to refine data sets for government use.
Extended Summary Functions:
- Explore advanced summary functions including ROLLUP, CUBE, GROUPING, and GROUPING_ID to support multi-level aggregation and subtotaling for government reporting.
Hierarchical Queries:
- Learn to query hierarchical data structures using the CONNECT BY PRIOR syntax to manage complex organizational data for government applications.
- Understand recursive Common Table Expressions (CTEs) to handle hierarchical data relationships, ensuring accurate representation of organizational structures for government use.
Data Densification:
- Utilize techniques such as CONNECT BY ROWNUM and recursive CTEs to densify data sets, enhancing the completeness of government datasets.
- Explore the concept of partitioned outer joins to expand data sets, improving data coverage for government analysis.
Set Operators:
- Master set operations including UNION, UNION ALL, INTERSECT, and MINUS to combine and compare data sets, supporting comprehensive data integration for government reporting.
Analytic/Window Functions:
- Explore a variety of analytic functions to perform calculations across rows and columns, enhancing the depth of data analysis for government purposes.
- Learn ranking functions such as ROW_NUMBER, RANK, and DENSE_RANK to support data ranking and ordering for government reporting.
- Understand Lead and Lag functions to access data from preceding or following rows, improving temporal analysis for government datasets.
- Utilize percentile functions to analyze data distribution, supporting statistical insights for government decision-making.
Execution Plan and Indexes:
- Understand how to analyze and interpret SQL execution plans to optimize query performance and enhance data retrieval efficiency for government systems.
- Explore the role of indexes in improving query performance and data retrieval efficiency, ensuring timely access to critical information for government operations.
Requirements
Testimonials (5)
overall a good training that responds to my needs. I received also information about Oracle VM VirtualBox allowing me to continue the practice on my own.
Liviu
Course - Oracle SQL LP - Fundamentals
I learned complex functions and how to apply them
Ana Alexandrescu - DB Global Technology
Course - Oracle SQL Advanced
Great comunication, Łukasz explained everything in easy and understandable way
Tomasz Wojciechowski - GP Strategies Poland sp. z o.o.
Course - ORACLE SQL Fundamentals
the trainer was very helpful , the pace of the training was really good and the exercises weren't too hard, also not too easy. whenever I got stuck he helped me out very well and made sure I understood everything.
Jade Stappaerts - KULeuven
Course - Oracle SQL Language
the exercises
