Course : SQL for users, advanced levelWrite complex SQL queries for high-performance analysis
Practical course - 3d
- 21h00 - Ref. SAU
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 | Correctly combine queries using subqueries, joins and relational operators |
| Master scalar functions and their use (indexing, conditional expressions, regular expressions, etc.). |
| Differentiate and use analytical functions, aggregate functions and windowing functions according to analysis needs |
| Exploit subgroup mechanisms (ROLLUP, CUBE) |
| Understand the differences between views and CTE (WITH) to simplify complex queries |
| Use update commands (INSERT, UPDATE, DELETE) |
Intended audience
Anyone wishing to improve their SQL skills by executing complex queries.
Prerequisites
Basic knowledge of SQL language.
Practical details
Hands-on work
Discussions, experience sharing, demonstrations, tutorials and case studies.
Teaching methods
Active pedagogy based on examples, demonstrations, experience sharing, case studies and assessment of learning throughout the course.
Course schedule
1 Reminders of how to build a relational database and SQL
- Tables, primary and foreign keys.
- Good use of different types of data.
- Creating tables and setting constraints.
- Joins (INNER, LEFT, RIGHT, FULL).
- Set operators (UNION, INTERSECT, EXCEPT).
- Views and indexes.
- SELECT command syntax.
Hands-on work
Get to grips with a database and handle simple queries.
2 Advanced data manipulation and analysis techniques in SQL
- Functions and indexing.
- Conditional processing with CASE.
- Regular expressions vs. the LIKE operator.
- Analytical functions vs. aggregate functions.
- Window functions.
- Subgroup functions with ROLLUP and CUBE.
Hands-on work
Handle extraction queries using the various functions covered in the chapter. Analyze the results obtained to determine the most relevant functions.
3 Methods for assembling and organizing SQL queries
- Subqueries versus joins.
- Division with operators.
- Subqueries in conditions.
- Correlated sub-surveys.
- Subqueries as data sources.
- Views versus CTE with WITH.
Hands-on work
Combine queries, check whether a join can replace a subquery. Manipulate ETCs.
4 Update orders
- User rights management for updates.
- Transactions.
- INSERT, UPDATE, DELETE update commands.
- The impact of constraints when executing an update.
- Mass updates.
Hands-on work
Perform database updating operations. Import and export data.
PARTICIPANTS
Anyone wishing to improve their SQL skills by executing complex queries.
PREREQUISITES
Basic knowledge of SQL language.
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
Anyone wishing to improve their SQL skills by executing complex queries.
PREREQUISITES
Basic knowledge of SQL language.
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TEACHING AIDS AND TECHNICAL RESOURCES
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
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