KwickClips Databases and SQL · 42 sec · free
Why do marks get lost?
Short answer. Fields in the wrong order, or text without quotes.
What separates field names?
Commas.
Three steps
| Fields asked, in that order |
| Table name, spelled exactly |
| Condition, then sort |
Remember
| Quotes around text |
| Commas between fields |
An exam script has gaps. How do you fill them fast? Use three steps. List fields in the order asked. Copy the table name exactly. Write the condition, then the sort. Also remember. Quotes around text. Commas between fields.
This clip is from the full lesson: SQL for Cambridge IGCSE: Single-table Databases and Queries — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478)
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