SQL Analytics: Aggregation, Subqueries & Query Optimization
About this course
You know how to query a table. But can you turn it into a business report, fix a slow query, or protect records when a transaction fails? This course takes you into analytics, optimization, & transaction management on real e-commerce data. Here’s what you will build: • Aggregation & Reporting Turn raw data into business insights by making use of COUNT, SUM, AVG, MIN, and MAX with GROUP BY and HAVING. Combine JOINs with aggregation to produce monthly sales reports and customer summaries. • Subqueries & Advanced Filtering Answer complex data questions employing subqueries inside WHERE, SELECT, and FROM, & apply IN, NOT IN, ANY, ALL, and EXISTS for retrieving insights; no single JOIN can give you. • Views, Indexes & Query Performance Build Views for reusable query logic, add Indexes to speed up how your database finds data, & improve query performance on real production tables. • Transactions & Data Safety Protect your data using COMMIT, ROLLBACK, and SAVEPOINT through a real bank transfer example that shows exactly how transactions prevent data loss. Taught in Hindi & built for analysts, developers, and data professionals. Trusted by 200,000+ learners across 160+ LearnKartS courses. Start today.
68/100
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- What the provider tells you
- 32/45
- Who stands behind it
- 20/35
- How complete the listing is
- 16/20
Scores how much the provider publishes and who stands behind it — not how well it is taught.
What you'll learn
- Create business reports using SQL aggregation functions
- Utilize subqueries for advanced filtering and data retrieval
- Implement views and indexes for improved query performance
- Understand transaction management concepts to protect data
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