SQL Advanced level for Analysts Training Course
The aim of this course is to provide a clear understanding of the use of SQL for different
databases (Oracle, SQL Server, MS Access...). Understanding of analytic functions and the
way how to join different tables in a database will help delegates to move data analysis
operations to the database side, instead of doing this in MS Excel application. This can also
help in creating any IT system, which uses any relational database.
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Course Outline
Selecting data from database
- Syntax rules
- Selecting all columns
- Projection
- Arithmetical operations in SQL
- Columns aliases
- Literals
- Concatenation
Filtering outcome tables
- WHERE clause
- Comparison operators
- Condition LIKE
- Condition BETWEEN...AND
- Condition IS NULL
- Condition IN
- AND, OR, NOT operators
- Several conditions in WHERE clause
- Operators order
- DISTINCT clause
Sorting outcome tables
- ORDER BY clause
- Sort by multiple columns or expressions
SQL Functions
- Differences between single-row and multi-row functions
- Character, numeric, DateTime functions
- Explicit and implicit conversion
- Conversion functions
- Nested functions
- Dual table (Oracle vs other databases)
- Getting current date and time with different functions
Aggregate data using aggregate functions
- Aggregate functions
- Aggregate functions vs NULL value
- GROUP BY clause
- Grouping using different columns
- Filtering aggregated data - HAVING clause
- Multidimensional Data Grouping - ROLLUP and CUBE operators
- Identifying summaries - GROUPING
- GROUPING SETS operator
Retrieving data from multiple tables
- Different types of joints
- NATURAL JOIN
- Table aliases
- Oracle syntax - join conditions in WHERE clause
- SQL99 syntax - INNER JOIN
- SQL99 syntax - LEFT, RIGHT, FULL OUTER JOINS
- Cartesian product - Oracle and SQL99 syntax
subqueries
- When and where subquery can be done
- Single-row and multi-row subqueries
- Single-row subquery operators
- Aggregate functions in subqueries
- Multi-row subquery operators - IN, ALL, ANY
Set operators
- UNION
- UNION ALL
- INTERSECT
- MINUS/EXCEPT
Transactions
- COMMIT, ROLLBACK SAVEPOINT statements
Other schema objects
- Sequences
- Synonyms
- Views
Hierarchical queries and samples
- Tree construction (CONNECT BY PRIOR and START WITH clauses)
- SYS_CONNECT_BY_PATH function
Conditional expressions
- CASE expression
- DECODE expression
Data management in different time zones
- Time zones
- TIMESTAMP data types
- Differences between DATE and TIMESTAMP
- Conversion operations
Analytic functions
- Use of
- Partitions
- Windows
- Rank functions
- Reporting functions
- LAG/LEAD functions
- FIRST/LAST functions
- Reverse percentile functions
- hypothetical rank functions
- WIDTH_BUCKET functions
- Statistical functions
Requirements
There are no specific requirements needed to attend this course.
21 Hours
Open Training Courses require 5+ participants.
SQL Advanced level for Analysts Training Course - Booking
SQL Advanced level for Analysts Training Course - Enquiry
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
Matija - Computerbits
Course - SQL Advanced level for Analysts
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