An intro to SQL Subqueries.
Subqueries remain one of the most powerful features in SQL. They can be used to filter data, generate values, and construct temporary data sets. What is a subquery? A subquery is a query contained within another statement (containing statement). It i...
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nice work, you've made it easy to follow and understand
Alex Kagai
Iteration: do it, do it right, do it well
Thank you