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Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.
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30 free minutes with a training advisor — no commitment.
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Explore the evolving role of artificial intelligence in crafting tailored educational journeys, with projections for groundbreaking advancements by April 2026.
Professional Training training in New York in September 2026 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Artificial Intelligence training in Cardiff in May 2026 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Professional Training training in Dallas in July 2026 with Learni. Certified, expert trainers, eligible for employer funding. Free quote.
Don't let this gap widen
Without expert SQL mastery, your queries slow down by 200% in production, causing 30% downtime during traffic peaks and estimated revenue losses of 5000€/day for an average e-commerce.
Overloaded databases frustrate 70% of users, boost customer churn by 25%, and expose you to memory leaks or blocking locks.
Imagine BI reports taking 5min instead of 5s: KPIs in freefall, competitors overtaking you.
Our expert training avoids these pitfalls, secures your critical performance starting tomorrow.
The Training SQL Expert - Optimize Queries and Performance training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.
The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.
To ensure the quality of the Training SQL Expert - Optimize Queries and Performance training, Learni provides the following teaching resources:
For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.
The assessment of skills acquired during the Training SQL Expert - Optimize Queries and Performance training is carried out through:
Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.
Learni training programs are available for inter-company and intra-company settings, both in-person and remote. Registration is possible up to 48 business hours before the start of training. Our programs are eligible for OPCO, Pôle emploi, and FNE-Formation funding. Contact us to discuss your training project and funding possibilities.
Dive into execution plan analysis via EXPLAIN on real datasets of 1 million records, create composite and covering indexes to accelerate massive joins, optimize recursive CTEs and windows for complex analyses during timed practical exercises, simulate high-concurrency loads to manage locks and transactions, produce deliverable performance reports with before/after benchmarks, transform your slow databases into ultra-responsive machines.
Target audience
Data engineers, backend developers, BI analysts seeking to advance their SQL skills.
Prerequisites
Mastery of intermediate SQL queries (multiple JOINs, subqueries, GROUP BY), practical experience on MySQL or PostgreSQL.
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