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Training SQL Expert - Optimize Queries and Database Performance

Ref: WAF482
10 people max.
5250 € HT / per person
−15% from 2 people−30% from 3 people−50% from 5 people
Pay in 3 installments · +$170/day onsite · +$500 with certification exam
5 journées
distanciel

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Learning objectives

  • Optimize complex SQL queries for maximum performance
  • Master indexes and execution plans to accelerate databases
  • Manage advanced transactions and concurrency in production
  • Analyze and debug performance with expert tools
  • Implement materialized views and partitioning for large volumes
  • Automate advanced SQL scripts for ETL
  • Secure access and audits in expert environments

The Learni story

Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.

Don't let this gap widen

Why this program matters

  • Without expert SQL mastery, your databases slow down by 50-80% on large volumes, causing revenue losses up to 100k€/year due to downtime.

  • Poorly optimized queries generate critical data bugs, exposing you to GDPR fines of 4% of revenue.

  • Deadlocks block apps during peaks, frustrating customers and teams.

  • Invest 35 hours today to avoid these costs: gain 10x speed, reduce errors by 90%, boost data ROI by 300%.

  • Don't let competitors outpace you with ultra-performant databases.

Allan Busi
Allan Busi

Learni Trainer · Expert

73%productivity gap
×3cost of inaction

Program

Module 1Advanced SQL Queries: subqueries, CTE, window functions (MySQL/PostgreSQL)

Dive into nested subqueries and recursive CTEs, practice on real 1M row datasets, build window functions for temporal analyses, generate deliverable analytical reports, test with EXPLAIN to visualize costs, while optimizing to scale in production.

Module 2Performance Optimization: indexes, execution plans, tuning (pgBadger tools)

Analyze execution plans with EXPLAIN ANALYZE, create composite and partial indexes on large volumes, measure gains up to 90% speed, exercise on real slow query cases, produce tuning reports with automated scripts, boost your skills for smooth databases.

Module 3Transactions and Concurrency: ACID, locks, advanced isolation levels

Simulate high concurrency scenarios with 100 simultaneous sessions, implement SAVEPOINT and conditional ROLLBACK, test isolation levels to avoid deadlocks, develop expert triggers for audits, deliver secure stored procedures, master pitfalls in multi-user environments.

Module 4Materialized Views, Partitioning: large data management (PostgreSQL Timescale)

Build automatically refreshed materialized views, partition tables by date or hash for billions of rows, migrate historical datasets in practical exercises, measure impacts on real-time queries, generate deliverable SQL dashboards, scale your skills for big data.

Module 5SQL Automation and Security: ETL scripts, audits, advanced roles

Develop ETL pipelines with PL/pgSQL or stored procedures, secure with ROW LEVEL SECURITY and audit logs, automate backups and restores via scripts, test on failover cases, produce a complete final project with monitoring, become autonomous for critical productions.

Evaluation method

  • Daily technical quizzes on SQL tools
  • Practical exercises with immediate feedback
  • Final project: optimization of a real database
  • Qualiopi certification for acquired skills

Learning method

  • Interactive pedagogy 70% practical, 30% theory
  • Remote platform with live exercises
  • Real cases from Fortune 500 companies
  • Replay videos and post-training resources

Methods, materials and delivery

The Training SQL Expert - Optimize Queries and Database Performance program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training SQL Expert - Optimize Queries and Database Performance program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training SQL Expert - Optimize Queries and Database Performance program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.

Verified reviews

What our learners

4.9 · +100 verified reviews
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
Read all reviews
Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

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