Course Outline
Extracting Data from Databases
- Understanding syntax rules
- Retrieving all columns
- Projection concepts
- Performing arithmetic operations in SQL
- Using column aliases
- Working with literals
- String concatenation
Filtering Result Sets
- Applying the WHERE clause
- Using comparison operators
- Utilizing the LIKE condition
- Employing BETWEEN...AND conditions
- Checking for NULL values with IS NULL
- Using the IN condition
- Logical operators: AND, OR, NOT
- Combining multiple conditions in the WHERE clause
- Operator precedence order
- Eliminating duplicates with the DISTINCT clause
Ordering Result Sets
- Implementing the ORDER BY clause
- Sorting by multiple columns or complex expressions
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: Oracle specific vs. other databases
- Retrieving current date and time using various functions
Aggregating Data with Aggregate Functions
- Overview of aggregate functions
- Handling NULL values in aggregate functions
- Using the GROUP BY clause
- Grouping data by different columns
- Filtering aggregated data using the HAVING clause
- Multidimensional grouping with ROLLUP and CUBE operators
- Identifying summary rows with the GROUPING function
- Utilizing the GROUPING SETS operator
Querying Multiple Tables
- Various types of joins
- NATURAL JOIN implementation
- Assigning table aliases
- Oracle style: specifying join conditions in the WHERE clause
- SQL99 style: INNER JOIN
- SQL99 style: LEFT, RIGHT, and FULL OUTER JOINS
- Cartesian products in Oracle and SQL99 syntax
Subqueries
- Identifying where subqueries can be placed
- Differentiating single-row and multi-row subqueries
- Operators for single-row subqueries
- Using aggregate functions within 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 tree structures using CONNECT BY PRIOR and START WITH clauses
- Using the SYS_CONNECT_BY_PATH function
Conditional Expressions
- The CASE expression
- The DECODE expression
Managing Data Across Time Zones
- Time zone concepts
- TIMESTAMP data types
- Distinguishing between DATE and TIMESTAMP
- Performing conversion operations
Analytic Functions
- Application and use cases
- Partitions
- Windows
- Ranking functions
- Reporting functions
- LAG and LEAD functions
- FIRST and LAST functions
- Reverse percentile functions
- Hypothetical rank functions
- WIDTH_BUCKET functions
- Statistical functions
Requirements
No prior specific experience or requirements are necessary to enroll 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
