Tag: SQL Coding Exercise
Puzzle is taken from https://oj.leetcode.com/problems/consecutive-numbers/ Write a SQL query to find all numbers that appear at least three times consecutively. +----+-----+ | Id | Num | +----+-----+ | 1 …
This SQL coding exercise is from oj-online-judge: https://oj.leetcode.com/problems/customers-who-never-order/ Two tables: the Customers table and the Orders table. Write a SQL query to find all customers who does not order …
The SQL coding exercise is from oj-online judge and you could submit your solution to this URL: https://oj.leetcode.com/problems/duplicate-emails/ Write a SQL query to find all duplicate emails in a …
The SQL Coding Exercise is from oj-leet Online Judge and you can submit your solution to this problem here: https://oj.leetcode.com/problems/employees-earning-more-than-their-managers/ The Employee table holds all employees including their managers. …