KwickClips Databases and SQL · 42 sec · free
Why sort by two columns?
Short answer. Many rows share the first value, so the second breaks the tie.
Does one DESC apply to both columns?
No. Write DESC after each column that needs it.
Remember
| First column sorts groups |
| Second column breaks ties |
| DESC only for its column |
Many students share a section. Who comes first inside it? Sort by section first. Inside each section, marks decide. DESC applies only to marks. The first column sorts. The second breaks ties. DESC is per column.
This clip is from the full lesson: Sorting Results with ORDER BY — 5 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 12 Computer Science (083), CBSE Class 12 Informatics Practices (065), CBSE Class 11 Information Technology (802), CBSE Class 12 Information Technology (802)
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