Question
Can you give several cases when a subquery is needed and cannot be substituted with a join? For example, the case where one needs to
Can you give several cases when a subquery is needed and cannot be substituted with a join?
For example, the case where one needs to find all customers who have never purchased a product (using a subquery with the NOT IN qualifier).
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Privacy In Statistical Databases Unesco Chair In Data Privacy International Conference Psd 2014 Ibiza Spain September 17 19 2014 Proceedings Lncs 8744
Authors: Josep Domingo-Ferrer
2014th Edition
3319112562, 978-3319112565
