Count( *) tallies only those rows that contain a value, while count counts all rows. true false
Answers
False. The statement is incorrect. Both `COUNT(*)` and `COUNT(column_name)` count all rows, including those with NULL values.
The `COUNT(*)` function in SQL counts all rows in a table or a result set, regardless of the presence or absence of values. It considers each row as a separate entity and includes NULL values in the count. This function is useful when you want to obtain the total number of rows, regardless of specific column values.
Similarly, the `COUNT(column_name)` function also counts all rows in a table or result set, but it only considers the non-NULL values in the specified column. It excludes NULL values from the count. This function allows you to determine the number of rows where a particular column has non-NULL values, which can be helpful for data analysis and filtering purposes.
In summary, both `COUNT(*)` and `COUNT(column_name)` count all rows, but `COUNT(*)` includes NULL values while `COUNT(column_name)` counts only non-NULL values in the specified column.
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Related Questions
Multimedia software is a tool that allows the user to run ______________ and ______________ with the help of media player and real player. *Multimedia software is a tool that allows the user to run ______________ and ______________ with the help of media player and real player. *
Answers
Answer:
audio and video
Explanation:
multimedia software is a tool that allows the user to run audio and video with the help of media player and real player
What country is associated with the tor relay using the ip address 104. 244. 74. 97?.
Answers
Answer:
104.28.63.45 is an IP address located in Santos, Sao Paulo.
Explanation:
For ul elements nested within the nav element, set the list-style-type to none and set the line-height to 2em.
For all hypertext links in the document, set the font-color to ivory and set the text-decoration to none.
(CSS)
Answers
Using the knowledge in computational language in html it is possible to write a code that For ul elements nested within the nav element, set the list-style-type to none and set the line-height to 2em.
Writting the code:<!doctype html>
<html lang="en">
<head>
<!--
<meta charset="utf-8">
<title>Coding Challenge 2-2</title>
</head>
<body>
<header>
<h1>Sports Talk</h1>
</header>
<nav>
<h1>Top Ten Sports Websites</h1>
<ul>
</ul>
</nav>
<article>
<h1>Jenkins on Ice</h1>
<p>Retired NBA star Dennis Jenkins announced today that he has signed
a contract with Long Sleep to have his body frozen before death, to
be revived only when medical science has discovered a cure to the
aging process.</p>
always-entertaining Jenkins, 'I just want to return once they can give
me back my eternal youth.' [sic] Perhaps Jenkins is also hoping medical
science can cure his free-throw shooting - 47% and falling during his
last year in the league.</p>
<p>A reader tells us that Jenkins may not be aware that part of the
least-valuable asset.</p>
</article>
</body>
</html>
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To insert a row, right-click the row below where you want to insert a row and then click on ____ the shortcut menu. A. Columns B. Insert C.Rows D.Cells
Answers
Answer:
I think it's insert. (It's the only one that actually makes sense).
Explanation:
Hope that helps. x
george hired an attacker named joan to perform a few attacks on a competitor organization and gather sensitive information. in this process, joan performed enumeration activities on the target organization's systems to access the directory listings within active directory.question 17 options:ldap enumerationnetbios enumerationsnmp enumerationntp enumeration
Answers
Joan performed LDAP enumeration to access the directory listings within the active directory of the target organization.
LDAP enumeration involves querying the Lightweight Directory Access Protocol (LDAP) service to retrieve information about the directory structure and objects within an active directory. By performing LDAP enumeration, Joan was able to gather sensitive information about the target organization's systems and access the directory listings, which may include user accounts, groups, organizational units, and other relevant information. This activity allowed Joan to gain a better understanding of the target organization's network infrastructure and potentially identify vulnerabilities or weaknesses that could be exploited in further attacks.
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How do i fix this? ((My computer is on))
Answers
Answer:
the picture is not clear. there could be many reasons of why this is happening. has your computer had any physical damage recently?
Answer:your computer had a Damage by u get it 101 Battery
and if u want to fix it go to laptop shop and tells him to fix this laptop
Explanation:
which of the software engineering characteristics do you most identify with? why do you connect most with those characteristics?
Answers
I most identify with the characteristic of creativity.
What is software engineering?
Software engineering is the application of engineering principles and techniques to the design, development, and maintenance of software systems. It is the process of creating and maintaining large, complex, and high-quality software systems. It involves planning, designing, coding, testing, and verifying software to ensure that it meets the user requirements and is reliable, secure, and efficient. Software engineering also involves managing the entire software development process, from requirements gathering to product design and implementation.
Characteristics of software engineering:
Creativity: Creative thinking is a key component of software engineering. It is essential for coming up with unique and powerful solutions to complex software problems.
Problem-solving: Software engineers must be able to identify problems and develop solutions to them. They must be able to assess the complexity of a problem and develop an efficient and effective solution.
Collaboration: Software engineering often involves working with other engineers, designers, and stakeholders to develop software. Collaboration is a key component of software engineering as it allows multiple minds to work together to come up with the best solution to a problem.
Communication: Effective communication is essential for software engineering. Software engineers must be able to explain their ideas and collaborate with other engineers and stakeholders to ensure that everyone is on the same page.
Attention to detail: Software engineers must pay attention to the smallest details of their software. They must be able to identify potential issues and find ways to fix them.
Time management: Software engineering often requires software engineers to manage their time effectively in order to ensure that projects are completed on time.
Software engineering is a complex field that requires a variety of skills. .As an engineer, I believe that creativity is essential in finding innovative solutions to complex problems. I also appreciate the importance of taking a creative approach when designing new products or services that meet the needs of users. I believe that creative thinking is a key component of software engineering and is essential for coming up with unique and powerful solutions.
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What do computers use to represent on and off? 0 and 1 1 and 2 RGB Megabyte
Answers
Follow your teacher's instruction to__________________your computer after each use.
Answers
Answer: proper shutdown
Hope that helps!
What is the best CPU you can put inside a Dell Precision T3500?
And what would be the best graphics card you could put with this CPU?
Answers
Answer:
Whatever fits
Explanation:
If an intel i9 or a Ryzen 9 fits, use that. 3090's are very big, so try adding a 3060-3080.
Hope this helps!
you are concerned that wireless access points may have been deployed within your organization without authorization.what should you do? (select two. each response is a complete solution.)
Answers
Wireless access points present a serious security risk if they are deployed without authorization. To mitigate this risk, it is important to implement a policy that requires all access points to be authorized by IT personnel before installation.
Wireless access points may have been deployed within your organization without authorization. What should you do?Develop a policy for wireless access points. Ensure that all access points must be authorized by IT personnel before installation.Monitor your network for any unauthorized access points and investigate any suspicious activity.Educate your employees on the risks associated with unsecured wireless access points and the importance of secure networks.Implement a strong authentication system to secure access to all wireless networks.Use an intrusion detection system (IDS) to detect unauthorized access points.Deploy an enterprise-grade wireless access point management system to monitor, control, and secure access points.Learn more about Wireless System: https://brainly.com/question/25633298
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Python String Functions: Create a new Python Program called StringPractice. Prompt the user to input their name, then complete the following:
Length
• Print: “The length of your name is: [insert length here]”
Equals
• Test to see if the user typed in your name. If so, print an appropriate message
Really appreciate the help.
Answers
#Swap this value by your name. Mine is Hamza :)
my_name = "Hamza"
#Get input from user.
inp = input("What's your name?: ")
#Print the length of his/her name.
print("The length of your name is",len(inp),"characters.")
#Check if the input matches with my name?
#Using lower() method due to the case insensitive. Much important!!
if(inp.lower()==my_name.lower()):
print("My name is",my_name,"too! Nice to meet you then.")
3. instruction messages instruction messages clearly explain how to execute a task. before writing instructions, be sure you fully understand the process you are explaining. the body of instruction messages should . when writing instruction messages, you should use the imperative mood. which of the following sentences uses the imperative mood? i would recommend making two copies of each document. make two copies of each document. will you please make two copies of each document?
Answers
The sentence that uses the imperative mood is B. "Make two copies of each document."
What is sentence that uses the imperative mood?The imperative mood is a grammatical mood used for commands, requests, or instructions. It is used to give direct and clear instructions to the reader or listener, without any ambiguity or uncertainty.
In this sentence, the verb "make" is in the base form without any subject, which is a characteristic of the imperative mood.
Therefore the correct option is B.
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Question 1 (25 marks) Management Information Systems (MIS) has brought new changes to Technology, Management and Organisation. Discuss FIVE (5) major changes that impacted the business globally. [25 m
Answers
Management Information Systems (MIS) have brought significant changes to Technology, Management, and Organization, impacting businesses globally.
The five major changes that have had a profound impact are:
1. Enhanced Decision-making: MIS provides real-time and accurate data, enabling managers to make informed decisions quickly. This has improved operational efficiency and strategic planning.
2. Improved Communication: MIS facilitates seamless communication across different departments and levels of an organization. It enables the sharing of information, collaboration, and coordination, leading to enhanced productivity and better decision-making.
3. Streamlined Operations: MIS automates and integrates various business processes, such as inventory management, supply chain, and customer relationship management. This streamlines operations, reduces human error, and improves overall efficiency.
4. Data-Driven Insights: MIS enables organizations to collect, analyze, and interpret vast amounts of data. This helps in identifying trends, patterns, and customer preferences, allowing businesses to make data-driven decisions and gain a competitive advantage.
5. Enhanced Customer Experience: MIS enables personalized and targeted marketing strategies, improved customer service, and efficient order processing. This enhances the overall customer experience and fosters customer loyalty.
In summary,MIS has transformed businesses globally through five major changes: improved decision-making, enhanced communication, streamlined operations, data-driven insights, and an enhanced customer experience. These changes have revolutionized how organizations operate, collaborate, and make strategic decisions, ultimately leading to increased efficiency, productivity, and customer satisfaction.
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Sheila wanted to contact her instructor and wondered what form of communication to use. Why should she avoid using text messages when communicating with her instructor?
A.
The instructor might not have a cell phone to receive texts.
B.
Emails are easier to use and understand for most people.
C.
It is typically considered impolite or too informal.
D.
The instructor might not understand your text speech.
Answers
Answer: The answer is C Am not 100% sure but if it's is right your welcome.
Explanation: because It is considered impolite or too informal and also using emails is helpful because it is quick and conversational. Students who text with friends often adopt shortcuts, such as not spelling out full words, ignoring capitalization and punctuation, and not focusing on grammar. So Sheila should use emails instead. Hope it helps!
What will be the results from running the following code?
print("Grades")
print(92)
print(80)
print("Total")
print(92 + 80)
Answers
Answer:
Grades
92
80
Total
172
Explanation:
Python is a very simple language, and has a very straightforward syntax. It encourages programmers to program without boilerplate (prepared) code. The simplest directive in Python is the "print" directive - it simply prints out a line (and also includes a newline, unlike in C).
Answer:
Grades
92
80
Total
172
Explanation:
What other size PCIe slot might you find on a motherboard? a. PCIe x16 b. PCIe x10 c. PCIe x3 d. PCIe x4.
Answers
Answer:PCIe x4
Explanation:
How do I make someone "Brainiest".
First person to reply will get "Brainiest"
Answers
Answer:
Usually when someone answers a question there would be an option to mark the brainliest. However, you only get one every like 24 hrs so if you already gave someone brainliest you can't give it to someone else for a while
Explanation:
Answer:
Brainiest
Explanation:
what would be a potential output of this program, assuming that the block sort deck will sort deck in alphabetical order from a to z?
Answers
Provided that perhaps the block sorted decking will sorted decks in alphabetical order from a to z, the output of this program may be DISPLAY(deck[i]), which would display one value three times.
Define : Potential output
That maximum amount of services and products that an economy can produce at its peak efficiency, or when it is operating at capacity, is known as potential output. Potential output is frequently referred to as the nation's economic production capacity. The production gap can move in either a favorable or negative direction, similar to how GDP can increase or decrease.
What elements affect potential output?
Measuring theoretical gross domestic product yields an estimate of potential output. Government policies, market efficiency, labor growth, liquidity, and accumulation of capital, or stock, all have an impact. Real GDP is the quantity of goods produced over a specific time frame, such as a quarter or a whole year. It also represents the real GDP.
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How to fix failed to open nvenc codec function not implemented?
Answers
If you are encountering the error message "failed to open nvenc codec function not implemented," it typically indicates that the NVIDIA Video Encoding (NVENC) codec is not installed or is not functioning properly.
To resolve this issue, you can try the following steps:
Update your graphics card drivers to the latest version. You can download the latest drivers from the NVIDIA website.
Verify that your graphics card supports NVENC encoding. Not all NVIDIA graphics cards support NVENC encoding, so it's important to check the specifications of your card.
Make sure that the NVENC codec is enabled in your video encoding software. This will vary depending on the software you are using, but you can typically find this setting in the preferences or settings menu.
If none of the above steps resolve the issue, you may need to reinstall the NVIDIA graphics drivers or seek further assistance from NVIDIA support.
Overall, fixing the "failed to open nvenc codec function not implemented" error requires troubleshooting the specific cause of the issue, which can vary depending on your system and software configuration.
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do you think you have the qualities of an enterpreneur in you? If yes, give examples when you have shown these qualities.
Answers
The quality that all successful entrepreneurs must possess is determination and the ability to take action. They have to think and make decisions quickly and they discipline themselves to act and implement their decisions.
What is entrepreneurs?An entrepreneur is defined as a person who has the ability and desire to establish, manage and succeed in a start-up company with his own risks, in order to generate profit.
It is classified into the following types:
Small Business- Scaling of Initial Business Large Corporate Business Social Business5 Qualities of a Better Entrepreneur
Willingness to fail. Fear of failure is a common affliction.Critical Thinking. As the first trait, critical thinking enables entrepreneurs to move away from the herd mentality Clarity of Vision. Use yourself. Strong communication.Entrepreneurship accelerates economic growthEntrepreneurs are important for a market economy because they can act as the wheels of a country's economic growth. By creating new products and services, they increase new jobs, which ultimately leads to an acceleration of economic development.
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What are the 2 types of Digital Imagery?
Answers
Answer:
vector or raster
Explanation:
which type of attack does the attacker infect a website that is often visited by the target users? smishing vishing phishing watering hole
Answers
who are your favorite You tubers mine are the Dobre Brothers
Answers
Answer:
mine are H2O delerious and Lazar beam
Explanation:
I enjoy watching watching whatever comes up on my recommended page :)
python formats all floating-point numbers to two decimal places when outputting with the print statement.
Answers
In Python, if the print command is false and output is desired, all floating-point integers are formatted to two decimal places.
What is Python's primary purpose?Python is frequently employed to create websites and applications, automate time-consuming tasks, and analyze and show data. Since Python is fairly easy to learn, many non-programmers, such as accountants and researchers, have utilized it for a range of mundane tasks, including managing funds.
Who in the actual world utilizes Python?IoT, application development, game development, web design, data analytics, and machine learning and artificial intelligence are some of the key sectors. Python is widely utilized in a variety of sectors, including finance, healthcare, finance, and aerospace.
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A popular game allows for in-app purchases to acquire extra lives in the game. When a player purchases the extra lives, the number of lives is written to a configuration file on the gamer's phone. A hacker loves the game but hates having to buy lives all the time, so they developed an exploit that allows a player to purchase 1 life for $0.99 and then modifies the content of the configuration file to claim 100 lives were purchased before the application reading the number of lives purchased from the file. Which of the following type of vulnerabilities did the hacker exploit?
a. Sensitive data exposure.
b. Dereferencing.
c. Broken authentication.
d. Race condition.
Answers
Based on the fact that the hacker's actions are done before the application reading of the lives purchased, this is d. Race condition.
What is a race condition?This is when certain processes in an application depend on the timing of a a previous process or event. The flow of information can then be intercepted before the process completes.
This is what the hacker did here by accessing the application to change the number of lives purchased before the application read the number of lives purchased.
In conclusion, option D is correct.
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Which one of the following Boolean equations states that "Q proves true only when every input value is true?" A. Q=A⊕B⊕C B. Q=A×B×C C. Q=A⋅B \& buil: C D. Q=A+B+C
Answers
The Boolean equation that states that "Q proves true only when every input value is true" is B. Q = A × B × C.
The equation Q = A × B × C is the Boolean equation that states that "Q proves true only when every input value is true." This is a simple Boolean equation with three inputs, A, B, and C, and the output, Q, is true only if all the inputs, A, B, and C, are true. In other words, the output, Q, is true only when every input value is true.
The multiplication sign in the equation represents the AND operator, which means that all inputs must be true to produce a true output. Therefore, if any input is false, the output, Q, will be false. This equation is an example of a Boolean expression and is commonly used in digital logic circuits.
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what excites you most and least, or if any, about knowing that crispr technology is going to change the ways plants, animals, and humans are birthed into society?
Answers
Concerns regarding CRISPR technology and its impact on plants, animals, and humans.
One of the most exciting aspects of CRISPR technology is its potential to help combat genetic diseases and improve the overall health of humans. By editing genes, researchers can potentially remove or correct harmful genetic mutations that cause various medical conditions. Additionally, CRISPR could be used to increase crop yields and create plants with increased resistance to diseases, ultimately benefiting agriculture and food production.
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help teacher said with complete explanation
Answers
Answer:
use the first graph to help you find out
Write a program code which asks for 80 numbers between 100 and 1000 to be entered.
It checks that the numbers are in the correct range, and stores them in an array. It
counts how many of the numbers are larger than 500 and then outputs the result when
the program is finished.
Answers
Answer:
If you are using Python,
```count = 0
for i in range(0, 79):
a = int(input("Input a number: "))
if 100 <= a <= 1000:
if a > 500:
count += 1
else:
print("Please input a number between 100 and 1000!")
i -= 1
print(count)```
Explanation:
count refers to the number of 500s and above,
the for loop is required for the program to loop 80 times,
a is the input collected,
the nested if is to check whether the number is above 500 and the if is used to check if the number is between 100 and 1000 if not, it will output that you need to input a number between 100 and 1000,
the i-=1 is required to make sure that part wasn't counted.
and the last print is to output the number of numbers above 500