Ars Technica

SQL: aggregate results for first/last attempts

SQL is, sadly, kicking my ass today. quiz: id descr ===== 1 FooQuiz question: id quizid descr response ===== 1 1 Foo [A,B] 2 1 Foo [A,B] quiz_attempt: id quizid userid ===== 1 1 1 2 1 2 ...
Ars Technica

SQL, Aggregate Functions, and Group By

I often run queries on my company’s Data Warehouse, which runs DB2. Due to the nature of my permissions, I cannot create Views or new Tables – thus, everything generally has to be done in a single ...
TES

IB Computer Science 2027 – A3.3.4 SQL Aggregate Functions – Lesson & Worksheet

IB DP Computer Science 2027 A3.3.4 SQL Aggregate Functions lesson and worksheet for the new 2027 syllabus. A classroom-ready resource designed to help Higher Level students construct SQL calculations ...