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.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
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
Without this upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Dive into SQL analytic functions like ROW_NUMBER, RANK, and LAG to process massive datasets, explore recursive Common Table Expressions on real business cases, perform practical exercises on production logs, analyze complex hierarchies with data trees, produce advanced aggregated reports, and validate your queries with detailed execution plans for immediate professional mastery.
Identify bottlenecks using EXPLAIN and EXPLAIN ANALYZE on PostgreSQL and MySQL, create composite, bitmap, and GIN indexes to boost performance, test slow queries on databases with 1 million rows, apply partitioning and sharding techniques, measure response time gains up to 90% faster, and document optimizations with concrete benchmarks for secure production deployments.
Master SQL isolation levels (READ COMMITTED, SERIALIZABLE) to prevent anomalies in multi-user environments, simulate and resolve deadlocks with explicit locks, implement SAVEPOINT and ROLLBACK for long transactions, practice on high-load e-commerce scenarios, analyze MVCC impact in PostgreSQL, produce reliable transaction logs, and configure timeouts for enterprise-grade resilience.
Develop complex stored procedures with loops and conditions in PL/pgSQL or MySQL, create BEFORE/AFTER triggers for automatic data auditing, integrate external API calls via UDFs, test on a red thread inventory management project, debug with error handlers, generate automated reports, and deploy scripts to reduce manual tasks by 70% in professional data workflows.
Configure master-slave and streaming replication in PostgreSQL for horizontal scaling, implement ROW LEVEL SECURITY and encryption of sensitive data, migrate to high-availability clusters with Patroni, simulate failovers in failure scenarios, optimize for AWS RDS or Azure SQL cloud environments, create a certified backup/recovery plan, and secure databases against advanced SQL injections for robust enterprise data infrastructure.
The Training SQL - Optimizing Databases for Big Data 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.
For the smooth delivery of the Training SQL - Optimizing Databases for Big Data program, the following equipment is required:
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.
Assessment of skills acquired during the Training SQL - Optimizing Databases for Big Data program is performed through:
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.
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.
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
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.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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Data EngineeringIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.