01. 00:00 Create aggregated query
Arrange tables on Diagram pane and add aggregation
02. 00:30 Define criteria
Define filter criteria in Criteria pane
03. 01:20 Duplications
Understand duplication in a query
04. 01:20 Aggregation
Learn how to convert a query to an aggregation query
05. 02:45 Simple aggregation
Create a simple count aggregation and analyze it
06. 03:35 Subquery
Understand the role and needs of a subquery