SQL · Grouping

SQL Grouping puzzles

10 SQL puzzles on grouping. Read the snippet, guess the output, then reveal the answer and why SQL behaves that way.

• #472026-07-23
• #452026-07-21
• #442026-07-20
• #432026-07-19
• #322026-07-08
• #232026-06-29
• #212026-06-27
• #202026-06-26
• #192026-06-25
• #82026-06-14