Review – Kingston USB 64 GB
I got a USB stick which is Kingston 64 GB. I have concerns about the quality of the USB sticks because I got some USB before which didn’t work …
SQL Coding Exercise – Customers Who Never Order
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 Online Linux Figlet Tool
The figlet command at *nix allows you to print large-size letters in screen with special characters. For example, if you want to compute some values and print it in …
Code Digital Sign for Microsoft Executables Including DLLs – Quick Tutorial
Code digital signing is the process mark a file (executables, dlls or other runnable files) as genuine so the file is not modified or altered. The file that is …
SQL Coding Exercise – Duplicate Emails
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 …
SQL Coding Exercise – Employees Earning More Than Their Managers
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. …