Take your SQL capabilities to the next level by mastering aggregate functions for statistical calculations, advanced join techniques including self joins and unions, comprehensive filtering with HAVING clauses, type conversion using CAST, and sophisticated date and time manipulation.
In this intermediate SQL course, you'll extend your foundational SQL knowledge by developing advanced filtering, grouping, and data analysis techniques for real-world business scenarios.
You'll master the process of grouping data and calculating common statistics and aggregations. When working with databases, you often need to change data types to suit your analysis requirements (accomplished through CAST functions), and you must become proficient in handling date and time values in various formats and manipulating them effectively. You'll also explore specialized join operations beyond basic inner joins, such as self joins and union operations, that unlock new analytical possibilities.
Upon completing this intermediate hands-on course, you'll possess comprehensive SQL techniques for extracting, filtering, and analyzing the exact data you need from databases. This capability enables you to convert unstructured data into strategic, actionable business intelligence.
Prerequisite Requirement:
You must have SQL skills equivalent to our SQL Level 1 course, including proficiency in basic queries, filtering fundamentals (WHERE, LIKE, and wildcard patterns), and standard inner JOIN operations.
Learn more about SQL Level II at NYC Career Centers.
