Aggregate functions (SUM, AVG, COUNT, MIN, MAX)
medium
1 of 5 Lessons
Grouping data (GROUP BY, HAVING)
medium
2 of 5 Lessons
Table joins (INNER, LEFT, RIGHT, FULL OUTER, CROSS)
medium
3 of 5 Lessons
Subqueries and Correlated Subqueries
medium
4 of 5 Lessons
Set operations (UNION, INTERSECT, EXCEPT)
medium
5 of 5 Lessons