Glossary term
What is Subquery?
In Apex Flow Academy, "Subquery" means: A query written in brackets inside another query, whose answer the outer query uses. It is taught in SQL: Ask Any Database Any Question. Related terms include Fan-out, CTE (WITH), Grain and Window function. Every Apex Flow Academy course lists the official sources it checked.
- 1 course teaches it
- plain-word definition
The facts
What is Subquery?
A query written in brackets inside another query, whose answer the outer query uses.
Where is Subquery taught?
Subquery is defined in SQL: Ask Any Database Any Question.
Which lessons cover Subquery?
These lessons name it in their title or objectives:
- SQL: Ask Any Database Any Question, lesson 5.3: Subqueries: A Query Inside a Query
Which terms are related to Subquery?
Next to Subquery in the course glossaries: Fan-out, CTE (WITH), Grain, Window function, LEFT JOIN, Transaction, INNER JOIN and Reconcile.
Fan-outCTE (WITH)GrainWindow functionLEFT JOINTransactionINNER JOINReconcile
The hard questions, answered straight
Bold questions people really ask. Each answer comes from the course data or a settled Academy fact.
Do I need experience before I learn Subquery?
It depends on the course. Each course that teaches it lists its own prerequisites, and all are listed at beginner level:
- SQL: Ask Any Database Any Question: No coding or database experience is needed.