Course : Transact-SQL, optimization for SQL ServerVersions 2022 to 2012
Practical course - 2d
- 14h00 - Ref. TAS
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 | Understanding how the SQL optimizer works |
| Choose the right indexes to optimize data access |
| Use profiler and extended events to improve performance |
| Use statistics and the execution plan to audit query performance |
| Improving queries through good writing practices |
| Using set queries |
Intended audience
Transact-SQL project managers, designers and developers.
Prerequisites
Good knowledge of the basics of the SQL language, or knowledge equivalent to that acquired in the course "SQL Server, SQL programming" (ref PSQ).
Practical details
Hands-on work
Interactive training, closely alternating theory and practice. Learning takes place through experimentation.
Course schedule
1 The relational model and SQL language
- Specific features of relational databases and SQL language.
- Data model standardization.
- Concepts of assembly and declarative writing. Specific features of the Transact-SQL dialect.
- How the SQL optimizer works.
Hands-on work
Experiment with queries on more or less standardized models.
2 Successful indexing
- The basics of indexing. B-Tree structure and different index types.
- How to choose indexes according to queries?
- The notion of query coverage by an index.
- The SARG (Search Argument) concept to encourage index use.
- Use of profiler and extended events (xevents).
- Use the Query Store to detect plan regressions.
Hands-on work
Indexing and tracing problem queries.
3 Writing high-performance queries
- Rules for writing SQL queries.
- Read and use execution statistics and the execution plan.
- Optimize data update code.
- Common errors: user functions, case-insensitive comparisons, cardinality estimation.
Hands-on work
Rewrite poorly performing queries.
4 Replace temporary tables and cursors
- Master subqueries and relational operators.
- Use the MERGE instruction for complex data updates.
- Create number and date tables for relational problem solving.
- Use windowing and statistical functions.
- Write recursive code using table expressions.
Hands-on work
Solve complex problems using set queries.
5 Best practices for code modules
- Rules for writing stored procedures.
- Master compilation and recompilation.
- Minimize the impact of triggers. Understand transactions and locking problems.
- Use transaction isolation levels.
Hands-on work
Writing an optimized stored procedure.
Customer reviews
4,5 / 5
Customer reviews are based on end-of-course evaluations. The score is calculated from all evaluations within the past year. Only reviews with a textual comment are displayed.
JOYCE M.
05/06/25
5 / 5
compliant
MIREILLE R.
05/06/25
5 / 5
very interesting discovery
NATHALIE L.
27/02/25
3 / 5
1H30 of exercise for 2 days of training is far too little. The training was far too dense. But a very interesting subject.
PARTICIPANTS
Transact-SQL project managers, designers and developers.
PREREQUISITES
Good knowledge of the basics of the SQL language, or knowledge equivalent to that acquired in the course "SQL Server, SQL programming" (ref PSQ).
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.
Transact-SQL project managers, designers and developers.
PREREQUISITES
Good knowledge of the basics of the SQL language, or knowledge equivalent to that acquired in the course "SQL Server, SQL programming" (ref PSQ).
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.
Dates and locations
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Remote class
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Date garantie en présentiel ou à distance
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