What is this programme?
SQL for Data Analysts is an online, self-paced program from ecertificate.pro, an independent training provider operating since 2016, covering aggregation, window functions, CTEs, date and time logic, and data quality control in roughly 22 hours. It is written for people who already read basic SELECT statements and now need analyst-grade query patterns: conditional aggregation, ranking and deduplication, running totals with explicit frame clauses, recursive date spines, time zone-safe filtering, and reusable assertion queries that return zero rows when the data is healthy. Completion is assessed through practical query exercises and a final test, after which the certificate is delivered to the learner's private panel - never as an email attachment - carrying a unique code that can be verified only in the ecertificate.pro database. This certificate is issued by ecertificate.pro alone: it is not government-approved, not accredited by any official body, grants no professional title or license, and is not recorded in any third-party register. It does not guarantee employment and does not replace an employer's own technical screening; it documents completed coursework and demonstrable query skill.
Who it is for
Junior and mid-level data analysts, BI and reporting specialists, product and marketing analysts moving out of spreadsheets, backend developers who maintain reporting queries, and anyone preparing for a SQL technical interview.
What you will be able to do
- Write grouped reports that survive one-to-many joins by pre-aggregating in a subquery instead of double counting rows.
- Pivot categories into columns in a single pass using conditional aggregation with CASE WHEN and FILTER (WHERE ...).
- Rank, deduplicate and measure period-over-period change with ROW_NUMBER, RANK, DENSE_RANK, LAG and LEAD.
- Build running totals and moving averages with explicit window frame clauses, and explain how ROWS and RANGE framing give different answers.
- Restructure long nested queries into readable CTE pipelines, including recursive CTEs for date spines and hierarchy walks.
- Handle UTC storage, time zone conversion and half-open date filters so daily reports never silently drop or duplicate a day.
- Ship a reusable data quality suite covering duplicate keys, orphan references, NULL profiling, freshness and row-count reconciliation.
Modules
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1
Query Foundations and Join Behavior
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2
Aggregation and Grouped Reporting
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3
Window Functions End to End
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4
CTEs and Query Structure
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5
Date and Time Logic
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6
Cohort, Retention and Funnel Queries
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7
Data Quality Control in SQL
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8
Readable, Efficient, Handoff-Ready Queries
How it works
Learning format
Self-paced written material, downloaded from your dashboard. No fixed schedule and no live sessions — you work through it when it suits you.
Material delivery
Everything appears in your dashboard as soon as your payment is confirmed. Files are served only to your signed-in session.
Prerequisites
You should be able to read a simple SELECT ... FROM ... WHERE query and know what a table, column, primary key and JOIN are. No programming language, statistics background or server administration experience is required; a free PostgreSQL, SQLite or cloud warehouse trial is enough for every exercise.
Completion
Work through the eight modules with hands-on query exercises, then pass the final assessment covering aggregation, window functions, CTEs, date logic and data quality checks. On completion the certificate is issued to your private panel on ecertificate.pro with a unique verification code.
Your certificate
Once your completion is confirmed, we prepare your certificate and upload it to your dashboard, normally within 24–48 hours. You receive an e-mail as soon as it is there — you never have to chase it.
Refunds
Because the material is delivered digitally and immediately, purchases are non-refundable once the files have been made available to your account. The full terms are in our Refund Policy.
