The non-negotiable foundation for every data, analytics, BI and reporting role. From SELECT to window functions to query optimisation — with hands-on labs on real datasets.
⏱Duration: 3 days / 24 hrs
💻Format: Instructor-Led + Live Labs
🌐Delivery: On-site · Virtual · Hybrid
✅Pass rate: 96%
📅Next intake: 6 May 2026
📊
Query writing
SELECT, JOIN, GROUP BY, CTE, window functions — written in reflex
🔍
Data exploration
Profiling, sampling and quality checks on real datasets
⚡
Performance
Indexing, execution plans, query rewriting for sub-second response
💾
Practical SQL
T-SQL, PostgreSQL, MySQL and Snowflake variations covered
What this course is
Where data work stops being a spreadsheet copy-paste.
SQL is the foundation skill for every data role — from BI analyst to data engineer to data scientist. It is the most-tested skill in interview rounds and the single highest-leverage skill any IT or business professional can pick up. This course turns you from SQL-novice or SQL-shaky into someone who writes window functions in reflex.
At Nexperts, SQL is delivered as a 3-day intensive across 24 hours of live, hands-on lab time. We give you live PostgreSQL and SQL Server sandboxes pre-loaded with realistic MY datasets (banking, telco, retail, e-commerce). By day 3 you've written 60+ queries, built two end-to-end reports and tuned a slow query 100x.
If your data career has stalled at Excel, SQL is the unlock. We have students who close interviews 3 weeks after this course — the only thing they were missing was the window-function fluency this course builds.
We cover ANSI-standard SQL with hands-on across PostgreSQL (the most-asked dialect in MY tech firms), SQL Server (banking + GLC standard), MySQL (e-commerce stack) and Snowflake (modern analytics). Every concept is paired with a real dataset and an exercise.
Who should take this course
📊
BI / Reporting analysts
Already using Power BI, Tableau or Excel. SQL unlocks data-warehouse direct access.
📚
Data analysts
Modern data work is SQL + Python. This course covers the SQL half.
Pulling data from SAP, Oracle, JDE. SQL replaces ticket queues to IT.
🔐
DBAs (junior)
Building the query-writing fluency before tackling DBA-track certs (DP-300).
💼
Career switchers
Pivoting into data roles. SQL is the table-stakes interview skill.
Prerequisites
✓ Basic computer literacy
✓ No database experience required
✓ Comfortable with Excel formulas (helpful, not required)
✓ We start at SELECT — absolute beginners welcome
→ No prior SQL? You're our target audience. The course starts at SELECT and ends at window functions.
Course Curriculum
Three days. From SELECT to window functions.
We cover SQL across 6 modules in 3 days. Every module is 70% hands-on against a live database. By day 3 you've written 60+ queries on realistic MY datasets.
Hands-On Labs
12 labs. Real MY datasets.
We give you live PostgreSQL and SQL Server sandboxes pre-loaded with realistic MY datasets. By day 3 you've written 60+ queries with full lab coverage of every module.
01
Bank Explore
15-query exploration of a banking transactions dataset.
Foundation
02
Customer 360
Build a customer-360 view across 4 source tables.
Joins
03
Telco Churn
Aggregation report on a telco churn dataset.
Aggregation
04
Date Math
Build month-on-month and YoY metrics with date functions.
Aggregation
05
E-Commerce
Build product-performance report from a Shopee-style schema.
Joins
06
Window: Rank
Top-N customers per region using window functions.
Window
07
Window: Cohort
Cohort retention analysis on a fintech dataset.
Window
08
Recursive
Build an org-chart report from an employee-manager hierarchy.
CTE
09
Star Schema
Build and populate a small dimensional model.
DDL
10
Slow Query
Take a 14-second query and tune to under 500ms.
Performance
11
Index Design
Design indexes for a 50M-row transaction table.
Performance
12
Mini Project
End-to-end report: raw data → cleaned → aggregated → visualised.
Capstone
+ 12 take-home queries with answer keys for post-course practice.
Skill Assessment
Practical assessment. Real queries.
No multiple-choice exam. We give you a 90-minute practical assessment on day 3: 12 questions of increasing difficulty against a live database. Pass = 75%. The assessment is repeated at intake + 6 weeks for retention measurement.
End of day 1. 6 fundamental queries. Pass = 5 / 6.
02
Day 2 Quiz
End of day 2. 9 queries. Pass = 7 / 9.
03
Day 3 Assessment
Final practical assessment. 12 queries. Pass = 9 / 12.
04
6-Week Retention
Repeat assessment 6 weeks later. Average score actually improves.
0%
Pass Rate
96% of our SQL graduates pass on first attempt.
Most SQL bootcamps run sequential lectures with no real practice time. We flip that. 70% of class is hands-on with a live database. By day 3, querying is reflex.
MY datasetsReal-DB labs96% first passTake-home practiceLive mentor
Why our pass rate is 96%
Self-study average: ~50%
Self-study SQL hits a wall at JOINs and never recovers. The window-function gap is permanent without live mentor support.
Nexperts: 96%
We unblock JOINs on day 1. We unblock window functions on day 2. By day 3, the assessment is recall, not panic.
Your Data Path
SQL pairs with Python and Power BI.
SQL is the foundation. Stack it with Python (data manipulation), Power BI (visualisation), or move to data-engineering tracks.
Expected salary range after SQL + 1 year applied experience: RM 5,500 – RM 9,500/month for BI / data-analyst roles. Higher with PL-300 or DP-203 stacked.
Student Reviews
What our SQL graduates say.
4.9
★★★★★
316 reviews
5★
274%
4★
38%
3★
4%
★★★★★
"Best skill course I've taken. The window-function lab on day 2 unlocked something I'd struggled with in 3 self-study attempts. Now I'm a BI lead at a fintech."
FY
Farah Yasmin
BI Lead · BigPay
✓ Promoted within 4 months
★★★★★
"Came in able to write SELECT * and basic WHERE. Left able to write recursive CTEs and tune slow queries. The instructor is patient with absolute beginners."
KK
Kavitha Krishnan
Data Analyst · Allianz
✓ First-attempt pass
★★★★★
"I'm a finance manager who was tired of waiting for IT to pull reports. SQL gives me direct access to our SAP DB. Course paid for itself in week 2."
DJ
Dewi Jamaludin
Finance Manager · IOI Properties
✓ First-attempt pass
★★★★
"Wished I'd done this 5 years ago. The performance-tuning module alone was worth the fee — we cut a critical report from 18 minutes to 9 seconds."
BS
Brandon Saw
Senior Analyst · Maxis
✓ First-attempt pass
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