Question: In the programming language SQL what is the difference between syntax COUNT ( * ) and COUNT ( ColName ) ?

In the programming language SQL what is the difference between syntax COUNT(*) and COUNT(ColName)?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

This question is complete Lets explore the differences between COUNT and COUNTColName in SQL by brea... View full answer

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!

Q:

You have been provided with the description of a programming language, J, intended for scripting applications. Its syntax is similar to a cut-down version of Java in that it consists of function...

Q:

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...

Q:

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...

Q:

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

Q:

Briefly describe ASCII and Unicode and draw attention to any relationship between them. [3 marks] (b) Briefly explain what a Reader is in the context of reading characters from data. [3 marks] A...

Q:

SQL Query Design Module Preview This guide contains a preview of the materials for all module courses in this series: Using a Relational Database Management System Single Table Query Commands...

Q:

lup ] (d) Show how a generating (or "mother") wavelet (x) can spawn a family of "daughter" wavelets jk(x) by simple shifting and scaling operations, and explain the advantages of representing...

Q:

In this question assume that p and q are atomic formulae. (a) Compare and contrast path formulae and state formulae in temporal logic. [4 marks] (b) Describe and contrast the meanings of F(G p) and...

Q:

Suppose that R(A, B, C) is a relational schema with functional dependencies F = {A, B C, C B}. (i) Is this schema in 3NF? Explain. [2 marks] (ii) Is this schema in BCNF? Explain. [2 marks] (b)...

Q:

Question 3: JAVA PROGRAMMING If we do not find the lens there, we could consider the state now to be that we have examined the top-left square and have not found the lens. After a number of actions,...

Q:

Consider a call option and a put option on a given stock both with a strike of $25. They cost $1.25 and $0.3 respectively. Explain how a straddle can be created from these two options. Draw the net...

Q:

An AP story (April 9, 2005) with headline Study: Attractive People Make More stated that A study concerning weight showed that women who were obese earned 17 percent lower wages than women of average...

Q:

Given the following information concerning a convertible bond: Princlpal: $ 1 , 0 0 0 Coupon: 6 percent Maturity: 1 4 years Call price: $ 1 , 0 4 0 Conversion price: $ 3 9 ( that is , 2 5 shares )...

Q:

Questions Q1. Write a Python program to retrieve the first and last colors from the following list: color_list = ["red", "green", "white", "blue", "black") Q2. Given the following dictionary,...