The Complete SQL Bootcamp (30 Hours): Go from Zero to Hero

Editorial course preview

What the public course preview actually shows

These 4 complementary views highlight concrete, legible examples from the course presentation.

Hand-drawn diagram comparing SQL LEAD and LAG window functions with tables showing Month, Sales, and calculated values, using arrows to illustrate data movement. — Preview 1 of 4
A hand-drawn visual explanation of SQL LEAD and LAG window functions, demonstrating how they access data from preceding or following rows in a dataset.

A diagram illustrating database index structure with an Index Page pointing to four Data Pages containing numbered names. — Preview 2 of 4
This diagram illustrates a database index structure, showing how an intermediate node directs queries to specific leaf level data pages for efficient retrieval.

A whiteboard chart comparing Subquery, CTE, TMP, CTAS, and View across storage, lifetime, deletion, scope, and reusability, with a presenter in the top left corner. — Preview 3 of 4
This comparison chart contrasts SQL techniques like Subqueries, CTEs, Temp Tables, CTAS, and Views by analyzing their storage methods, lifetimes, scopes, and reusability.

A screenshot of a SQL code editor displaying a query to calculate month-over-month sales performance using window functions, with a results grid below showing OrderMonth, Current/1 — Preview 4 of 4
The image displays a SQL query calculating month-over-month sales changes using the LAG function and window frames, alongside a results grid demonstrating the output for different months.