How to use Sql subset. Understand one more use of sql join and sql subquery
|What is Subset?
It's better to explain subset with a picture.
Usually the problem is as followed:
I have two tables, A and B. Is there any entry in A that is not in B?
That is, in other words, is A the subset of B?
There are two ways to solve this. One is using Sql subquery. Two is using Sql Join.
Return from Sql Subset to Problems and Solutions
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