Optimizer hint: Special instructions that are embedded inside the SQL command test for the optimizer is called as optimizer hints. They are three kinds of hint namely: ALL_ROWS It minimizes the overall time of the execution by instructing the optimizer. FIRST_ROW It minimizes the need for executing the first set of rows by instructing the optimizer. INDEX(name) The optimizer is forced to use the index to process the query.

BuyFind

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
BuyFind

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482

Solutions

Chapter 11, Problem 21P
Program Plan Intro

Optimizer hint:

  • Special instructions that are embedded inside the SQL command test for the optimizer is called as optimizer hints.
  • They are three kinds of hint namely:
    • ALL_ROWS
      • It minimizes the overall time of the execution by instructing the optimizer.
    • FIRST_ROW
      • It minimizes the need for executing the first set of rows by instructing the optimizer.
    • INDEX(name)
      • The optimizer is forced to use the index to process the query.

Expert Solution

Want to see the full answer?

Check out a sample textbook solution.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.