I want to reduce the monthly task of tallying paper time cards. "Attendance All-in-One" created by a one-person IT department

At the end of the month, I spread out paper time cards and shift schedules on my desk. "There's no clock-out time recorded ...

Practicing SQL GROUP BY and HAVING with a Fictional Household Account Book: How I Finally Understood the Difference from WHERE

When I started learning SQL, I managed to get through SELECT and WHERE, but the first things that stopped me in my tracks ...