May 2020
Beginner
564 pages
14h 9m
English
Content preview from Learn SQL Database Programming
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Questions
- What does the GROUP BY clause allow you to do?
- Do you use the WHERE clause before or after the GROUP BY clause?
- What's the difference between a GROUP BY clause without aggregate functions and a DISTINCT query?
- Do you use the ORDER BY clause before or after the GROUP BY clause?
- What modifier can you use on the GROUP BY clause to get subtotals and grand totals?
- What does the HAVING clause do?
- What's the difference between the WHERE and HAVING clauses?
- Can you use the WHERE and HAVING clauses together?
- What order do you write query clauses in?
- What order does MySQL execute query clauses in?
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