Course Outline
Extracting Data from Databases
- Understanding syntax rules
- Retrieving all columns
- Applying projection
- Performing arithmetical operations in SQL
- Using column aliases
- Working with literals
- Concatenating values
Filtering Result Sets
- Utilizing the WHERE clause
- Employing comparison operators
- Using the LIKE condition
- Applying the BETWEEN...AND condition
- Checking for NULL values with IS NULL
- Using the IN condition
- Combining conditions with AND, OR, and NOT operators
- Constructing multiple conditions within the WHERE clause
- Understanding operator precedence
- Removing duplicates with the DISTINCT clause
Sorting Result Sets
- Using the ORDER BY clause
- Sorting by multiple columns or expressions
SQL Functions
- Distinguishing between single-row and multi-row functions
- Using character, numeric, and DateTime functions
- Understanding explicit and implicit conversion
- Applying conversion functions
- Nesting functions
- Using the Dual table (differences between Oracle and other databases)
- Retrieving current date and time using various functions
Aggregating Data with Aggregate Functions
- Overview of aggregate functions
- Handling aggregate functions with NULL values
- Using the GROUP BY clause
- Grouping by different columns
- Filtering aggregated data using the HAVING clause
- Multidimensional data grouping with ROLLUP and CUBE operators
- Identifying summaries with GROUPING
- Using the GROUPING SETS operator
Retrieving Data from Multiple Tables
- Exploring different types of joins
- Using NATURAL JOIN
- Defining table aliases
- Oracle syntax - specifying join conditions in the WHERE clause
- SQL99 syntax - INNER JOIN
- SQL99 syntax - LEFT, RIGHT, and FULL OUTER JOINS
- Cartesian product - comparing Oracle and SQL99 syntax
Subqueries
- Determining when and where to use subqueries
- Differentiating single-row and multi-row subqueries
- Using single-row subquery operators
- Incorporating aggregate functions in subqueries
- Multi-row subquery operators - IN, ALL, ANY
Set Operators
- UNION
- UNION ALL
- INTERSECT
- MINUS/EXCEPT
Transactions
- Managing COMMIT, ROLLBACK, and SAVEPOINT statements
Other Schema Objects
- Sequences
- Synonyms
- Views
Hierarchical Queries and Sampling
- Constructing trees using CONNECT BY PRIOR and START WITH clauses
- Utilizing the SYS_CONNECT_BY_PATH function
Conditional Expressions
- Using the CASE expression
- Using the DECODE expression
Managing Data Across Time Zones
- Understanding time zones
- Working with TIMESTAMP data types
- Differences between DATE and TIMESTAMP
- Performing conversion operations
Analytic Functions
- Practical applications
- Partitions
- Windows
- Ranking functions
- Reporting functions
- LAG/LEAD functions
- FIRST/LAST functions
- Reverse percentile functions
- Hypothetical ranking functions
- WIDTH_BUCKET functions
- Statistical functions
Requirements
No prior 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
