Advanced SQL Certificate (Learn-by-doing, 24/7, Online, Self-Paced, Gamified, Realtime Instructional Support)

Advanced SQL (NCLab): This online, self-paced, learn-by-doing course equips learners with the tools needed to manage and analyze complex, real-world data. Building on foundational SQL knowledge, this course introduces conditional expressions using CASE, advanced aggregate filtering, and strategies for working with NULL values. Students develop fluency in text string operations, regular expressions, and Unicode handling—essential for data cleaning and pattern recognition. The course also explores sets, subqueries, and advanced joins, including left, right, full, cross, and self joins. Learners practice set operations like UNION, INTERSECT, and EXCEPT, and write custom SQL functions using CREATE FUNCTION. With hands-on work in real databases, students gain practical skills for advanced data querying, transformation, and automation.