Describe the purpose of the group by clause

Assignment Help Basic Computer Science

Reference no: EM131269928

1. Describe the purpose of the GROUP BY clause. Why must the attribute in the GROUP BY clause also appear in the SELECT clause?

2. Describe the purpose of the HAVING clause. How do you decide whether to place a row-limiting predicate in the WHERE clause or in the HAVING clause?

Reference no: EM131269928

Questions Cloud

Find the interest earned : Find the interest earned at 4.15%, compounded continuously, for 4 years for a continuous income stream with a rate of flow of f(t)=1,000-250t.

What is the coefficient of coupling : What is the coefficient of coupling - Assume that the physical structure of these cou-pled coils is such that ρ1 = ρ2. What is the turns ratio N1/N2 if N1 is the number of turns on the 52 mH coil - Find the coefficient of coupling.

How do relational query optimizers work : What are some of the ways that relational query optimizers can handle joins?

What is a subquery in an sql select statement : How do you construct a Join operation in an SQL SELECT statement?

Describe the purpose of the group by clause : Describe the purpose of the HAVING clause. How do you decide whether to place a row-limiting predicate in the WHERE clause or in the HAVING clause?

How the decentralized nature of terrorist networks impacts : Briefly describe how the decentralized nature of terrorist networks impacts the ability of the United States to combat terrorism. Prepare this assignment according to the APA guidelines found in the APA Style Guide, located in the Student Success..

Describe the web application software stack : What are the three categories of web application infrastructure elements? Describe the web application software stack. What is the role of a web application platform? What components does it contain?

Reduce unemployment in south africa : Discuss ANY THREE (3) measures that have been used to reduce unemployment in South Africa in the last decade. Recommend the curse of action which you think the government should take to reduce unemployment to an acceptable level.

Write an sql command to create the customer table : Write an SQL command to add a new record to the CUSTOMER table for Customer Number 9442. The Customer Name is Smith Hardware Stores, the responsible salesperson is Salesperson Number 577, and the HQ City is Chicago.

User Account

All Pages