Question: What is a join command? In addition, How can you combine two tables/views together? For instance one table contains 100 rows and the other one

What is a join command? In addition, How can you combine two tables/views together? For instance one table contains 100 rows and the other one contains 200 rows, have exactly the same fields and you want to show a query with all data (300 rows).

And

Why can a "group by" or "order by" clause be expensive to process? What is the difference between a where and having clause?

I need another explaination other than whats on here already please..

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

An operation to join a table to itself is called a(n): a) sufficient-join. b) inner join. c) outer join. d) self-join. 7. A type of query that is placed within a WHERE or HAVING clause of another...

Algorithms in Artificial Intelligence (or, the old name: Introduction to Algorithmic Decision Making) Part 1 Based on slides by David Sarne and Lirong Xia Course Tentative Schedule Introduction...

Database Administration CHAPTER OBJECTIVES I Understand the need for and importance of database I ttno'illI the meaning of ACID transaction administralin - Learn the tour 1992 ANSI standard isolation...

A creative engineer suggests structuring the TLB so that not all the bits of the presented address need match to result in a hit. Suggest how this might be achieved, and what might be the costs and...

1. - Expain the motivations of Unilever in acquiring Inmarko. - Identify the risks Unilever faces in using acquisition as a mode for growth, as opposed to other modes discussed in the chapter. 2....

Write two paragraphs for Chapter 14 (Maximum seven grammatically correct complete sentences in each paragraph). One summarizing the chapter and one what you learned in each chapter. It should be your...

The best definition for nonparametric statistics I can think of is when data does not fit inside the normal parameters of a normal distribution, it calls for the use of this statistical method....

Need help coding this. Project Description This first project is meant to ensure that you are able to apply and extend your prerequisite knowledge as well as introduce you to developing and testing a...

Fungi sometimes live in a mutualistic relationship with a plant. they might help their host by______. A). Using the food supplied by the host. B). Using energy made by the host. C). Supplying water...

A wooden block A of mass 4.0 kg slides on a frictionless table when pulled using a massless string and pulley array by a hanging box B of mass 5.0 kg, as shown in the figure. What is the acceleration...

What is the Equity Value Per Share when running the Base Cave Drivers ( Perpetuity Method ) ? 6 . 9 3 per share 6 . 1 1 per share 4 . 9 3 per share 2 9 8 per share

Now you have all these little pieces to encrypt and decrypt your code but it is not put together yet using all the function separately and modifying your main function for each message you send is...