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Write a SQL query to find all duplicate emails in a table named Person.+—-+———+ | Id | Email | +—-+———+ | 1 | a@b.com | | 2 | c@d.com | | 3 | a@b.com | +—-+———+ For example, your query shou

Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation – it essentially peek() at the element that will be return

Word PatternMy SubmissionsQuestion Solution Total Accepted: 1488 Total Submissions: 5360 Difficulty: EasyGiven a pattern and a string str, find if str follows the same patt

Write a SQL query to delete all duplicate email entries in a table named Person, keeping only unique emails based on its smallest Id.+—-+——————+ | Id | Email | +—-+——————+ | 1 | john@exa

https://leetcode.com/problems/rising-temperature/# Write your MySQL query statement belowselect w1.Id from Weather w1,Weather w2 where TO_DAYS(w1.Date) = TO_DAYS(w2.Date) + 1 AND w1.Temperature > w2.T

Write a SQL query to get the second highest salary from the Employee table.+—-+——–+ | Id | Salary | +—-+——–+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +—-+——–+ For example, given the above