Course Outline
Extracting Data from Databases
- SQL syntax conventions
- Retrieving all columns
- Column projection
- Arithmetic operations within SQL
- Assigning column aliases
- Working with literals
- String concatenation
Refining Result Sets via Filtering
- Utilizing the WHERE clause
- Employing comparison operators
- Pattern matching with LIKE
- Range filtering with BETWEEN...AND
- Checking for NULL values
- Member checks with the IN condition
- Logical operators: AND, OR, NOT
- Combining multiple conditions in WHERE clauses
- Operator precedence rules
- Removing duplicates with the DISTINCT clause
Organizing Results through Sorting
- Applying the ORDER BY clause
- Sorting by multiple columns or complex expressions
Implementing SQL Functions
- Distinguishing between single-row and multi-row functions
- Character, numeric, and DateTime functions
- Explicit versus implicit data conversion
- Using conversion functions
- Nesting functions
- The Dual table in Oracle compared to other database systems
- Retrieving current date and time using various functions
Aggregating Data with Aggregate Functions
- Overview of aggregate functions
- Handling NULL values in aggregates
- Grouping data with the GROUP BY clause
- Grouping by various column combinations
- Filtering aggregated results using the HAVING clause
- Multi-dimensional grouping with ROLLUP and CUBE operators
- Identifying summary rows with the GROUPING function
- Using the GROUPING SETS operator
Retrieving Data Across Multiple Tables
- Various types of joins
- NATURAL JOIN implementation
- Using table aliases
- Oracle syntax: specifying join conditions in the WHERE clause
- SQL99 syntax: INNER JOIN
- SQL99 syntax: LEFT, RIGHT, and FULL OUTER JOINS
- Cartesian products in Oracle and SQL99 syntax
Utilizing Subqueries
- Identifying appropriate contexts for subqueries
- Distinguishing single-row and multi-row subqueries
- Operators for single-row subqueries
- Integrating aggregate functions within subqueries
- Multi-row subquery operators: IN, ALL, ANY
Combining Result Sets with Set Operators
- UNION operation
- UNION ALL operation
- INTERSECT operation
- MINUS/EXCEPT operation
Managing Transactions
- Using COMMIT, ROLLBACK, and SAVEPOINT statements
Exploring Other Schema Objects
- Creating and using Sequences
- Working with Synonyms
- Defining Views
Performing Hierarchical Queries and Sampling
- Building tree structures with CONNECT BY PRIOR and START WITH clauses
- Using the SYS_CONNECT_BY_PATH function
Applying Conditional Expressions
- The CASE expression
- The DECODE expression
Managing Data Across Time Zones
- Understanding time zones
- TIMESTAMP data types
- Distinguishing between DATE and TIMESTAMP
- Executing conversion operations
Leveraging Analytic Functions
- Applications of analytic functions
- Defining partitions
- Configuring windows
- Ranking functions
- Reporting functions
- LAG and LEAD functions
- FIRST and LAST functions
- Reverse percentile functions
- Hypothetical ranking functions
- WIDTH_BUCKET functions
- Statistical functions
Requirements
No specific prerequisites are required to participate in this course.
Testimonials (7)
I liked the pace of the training and the level of interaction. All participants were encouraged to actively partake in discussions around exercise solutions, etc.
Aaron - Computerbits
Course - SQL Advanced level for Analysts
The trainer's efforts to make sure the less knowledgeable participants weren't being left behind.
Cian - Computerbits
Course - SQL Advanced level for Analysts
I greatly appreciated the interactive nature of the class, where the trainer actively engaged with attendees to ensure they were comprehending the material. Additionally, the trainer's excellent understanding of various database manipulation tools significantly enriched his presentations, providing a comprehensive overview of the tools' capabilities.
Kehinde - Computerbits
Course - SQL Advanced level for Analysts
Lukasz's teaching approach is far superior to traditional methods. His engaging and innovative style made the training sessions incredibly effective and enjoyable. I highly recommend Lukasz and NobleProg to anyone seeking top-notch training. The experience was truly transformative, and I feel much more confident in applying what I've learned
Adnan Chaudhary - Computerbits
Course - SQL Advanced level for Analysts
The training was incredibly interactive, making it both engaging and enjoyable. The activities and discussions effectively reinforced the material. Every necessary topic was covered thoroughly, with a well-structured and easy-to-follow format that ensured we gained a solid understanding of the subject. The inclusion of real-world examples and case studies was particularly beneficial, helping us see how the concepts could be applied in practical scenarios. Łukasz fostered a supportive and inclusive atmosphere where everyone felt comfortable asking questions and participating, which greatly enhanced the overall learning experience. His expertise and ability to explain complex topics in a simple manner were impressive, and his guidance was invaluable in helping us grasp difficult concepts. Łukasz's enthusiasm and positive energy were contagious, making the sessions lively and motivating us to stay engaged and participate actively. Overall, the training was a fantastic experience, and I feel much more confident in my abilities thanks to the excellent instruction provided.
Karol Jankowski - Computerbits
Course - SQL Advanced level for Analysts
Extremely happy with Luke as a trainer. He is very engaging and explains each topic in a way that i could understand. He was also very willing to answer questions. I would highly recommend him as a trainer going forward. I ask a LOT of questions, and Luke was always more than happy to take the time to answer them.
Paul - Computerbits
Course - SQL Advanced level for Analysts
How he explains things
