SQL - MIN() and MAX() Functions
SQL aggregate functions transform multiple rows into single summary values. They’re the workhorses of reporting, analytics, and data validation. While COUNT(), SUM(), and AVG() get plenty of…
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Min Stack: O(1) Minimum Retrieval
The Min Stack problem appears deceptively simple: design a stack that supports push, pop, top, and getMin—all in O(1) time. Standard stacks already give us the first three operations in…
How to Use MIN and MAX in MySQL
MySQL’s MIN() and MAX() aggregate functions are workhorses for data analysis. MIN() returns the smallest value in a column, while MAX() returns the largest. These functions operate across multiple…
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