Interview Q&A / SQL & DBMS
SQL & DBMS interview questions
Joins, keys, normalisation, indexes and transactions for placement and backend interviews.
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- What is a CROSS JOIN and when would you use it?
A CROSS JOIN pairs every row of one table with every row of the other, giving rows1 x rows2 results. It is useful for generating combinations, such as every size with every colour.
BeginnerQuick answer1 min read