Oracle SQL·Oracle SQL essentials

Queries

Oracle SQL uses ROWNUM or FETCH FIRST for row limits.

Intermediate 10 min read Lesson 1 of 150 Challenge included
What you will be able to do
  • Use SELECT and WHERE.
  • Use FETCH FIRST for limits.
  • Use DUAL for expressions.

In plain English

Oracle SQL uses ROWNUM or FETCH FIRST for row limits.

  • Use SELECT and WHERE.
  • Use FETCH FIRST for limits.
  • Use DUAL for expressions.
query.sqlSQL
SELECT title, minutes
FROM lessons
WHERE minutes >= 15
ORDER BY minutes DESC
FETCH FIRST 10 ROWS ONLY;
Your turn

Explain it back

Easy

Answer from memory: Which table provides a single dummy row?

TEXT · starter
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Knowledge checkQuestion 1

Which table provides a single dummy row?

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