1^st lesson free

Ayan

5 (1 review)

Rate £4
Response 1h

5 (1 review)

£4/hr

1^st lesson free

SQL
PostgreSQL

Join the Ultimate SQL Masterclass: Go From Zero to Query Hero Classes on Weekends | Self Paced | Learn via Implementation

SQL
PostgreSQL

Lesson location

- Online

About Ayan

2+ years of Working Experience in a Fortune 500 product-based organization.

Mentoring since 4+ years internationally.

I believe students thrive when learning and implementation goes hand in hand.

> > What I offer as a mentor:

End-to-End Database Mastery: Mastering the workflow from database design to complex data architecture.

Tool Proficiency: In-depth training in SQL syntax, multi-table joins, subqueries, CTEs.

Performance Optimization: Practical knowledge in database indexing, query tuning, and reading execution plans.

Practical Mentorship: 1:1 sessions focused on "implementation," optimizing slow queries, and debugging together.

If you’re looking to transition into data or want to sharpen your technical edge with a structured backend roadmap, let's connect.

About the lesson

Classes on Weekends.
1 Hour Class

Topics :
1. Basics & Retrieval
[Syntax: SELECT, FROM, AS] [Filtering: WHERE, LIKE, IN, BETWEEN] [Sorting: ORDER BY, LIMIT]

2. Aggregation & Grouping
[Functions: COUNT, SUM, AVG, MIN, MAX] [Grouping: GROUP BY] [Filtering Groups: HAVING]

3. Joining Tables
[Core Joins: INNER, LEFT, RIGHT, FULL OUTER] [Self & Cross: Self Joins, CROSS JOIN] [Set Operations: UNION, UNION ALL]

4. Subqueries & CTEs
[Subqueries: Nested, Correlated] [CTEs: WITH clauses] [Logic: CASE WHEN conditionals]

5. Data Modification
[DML: INSERT, UPDATE, DELETE, TRUNCATE] [DDL: CREATE, ALTER, DROP] [Constraints: PRIMARY, FOREIGN KEY]

6. Optimization & Tuning
[Indexing: Clustered, Non-Clustered] [Performance: EXPLAIN plans, Tuning] [Transactions: COMMIT, ROLLBACK, ACID]

Recommendations

Recommendations come from relatives, friends and acquaintances of the teacher

Annesha

Ayan is a really good tutor. We are both into teaching. He is really patient and approachable.
Very knowledgeable tutor
Read more

A
Annesha
Ayan is a really good tutor. We are both into teaching. He is really patient and approachable.
Very knowledgeable tutor
View more recommendations

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5h: £20
10h: £40

free lessons

The first free lesson with Ayan will allow you to get to know each other and clearly specify your needs for your next lessons.

online

£4/h

Join the Ultimate SQL Masterclass: Go From Zero to Query Hero Classes on Weekends | Self Paced | Learn via Implementation

Lesson location

About Ayan

About the lesson

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Join the Ultimate SQL Masterclass: Go From Zero to Query Hero Classes on Weekends | Self Paced | Learn via Implementation

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