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Single-row functions return a single result row for every row of a queried table or view.
The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results by one or more columns.
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Do Group functions include nulls in calculations?
FALSE
What is the difference between head and ahead?
Ahead is a direction, the direction toward which you are traveling or facing. Head is the part of the body atop the neck or the principal member of a group or the form in which cabbage and some types of lettuce grow.
What is the difference between candidate key and primary key with example?
Any group of keys or columns (may be one or more than one) which can be used to uniquely refer to any row is together called as candidate key.A primary key only one column name which can be used to uniquely refer any row.there is no much difference b/w these two except the number of columns in consideration.
Difference between comparison to and comparison with?
These are commonly used interchangeably, and the distinction between them is a small one. "Comparison to" should be used when comparison is made between specific people, things, or other instances. Example: John is an excellent student in comparison to his shiftless brother Mike. "Comparison with" should be used when comparison is made to a group or an indefinite (i.e. uncountable) entity. Example 1: John is an excellent student in comparison with the rest of his class. Example 2: John has excelled in school in comparison with what I feared.
Diff between static NAt and dynamic NAt?
Static NAT: Maps an unregistered IP address to a registered IP address on a one-to-one basis. Particularly useful when a device needs to be accessible from outside the network. Dynamic NAT: Maps an unregistered IP address to a registered IP address from a group of registered IP addresses. Dynamic NAT also establishes a one-to-one mapping between unregistered and registered IP address, but the mapping could vary depending on the registered address available in the pool, at the time of communication. Overloading: A form of dynamic NAT that maps multiple unregistered IP addresses to a single registered IP address by using different ports. Known also as PAT (Port Address Translation), single address NAT or port-level multiplexed NAT.
What is the difference between network and internetwork?
The difference between the two is that a network could be defined as a group of locally connected computers (Eg: Computers connected in an office buliding); whereas, An internetwork is a collection of individual networks, connected by intermediate networking devices, that functions as a single large network
Which single word in the English language is the name of the difference between the highest and the lowest score of a group of numbers?
range
What is an important difference between implementing the multicast abstract via multiple unicasts and a single network router supported multicast group?
multicast is group communication where information is addressed to a group of computers where unicast packet is sent from a single source to a single destination .
What is an important difference between implementing the multicast abstract via multiple unicasts and a single network (router) supported multicast group.?
multicast is group communication where information is addressed to a group of computers where unicast packet is sent from a single source to a single destination .
Difference between chain banking group banking?
Difference between chain banking group banking?
What is difference between work group and domain?
what is difference between work-group and domain
What is the difference between Fabrication and Manufacturing in an Industry?
MANUFACTURING VS FABRICATION: single product is obtained by manufacturing and group of product which result is single obtained by fabrication.
What is the difference between a first hit record and a first hit single?
the first hit record was a group of songs. the first hit single is one song.
What is the difference between an absolute monarchy and an oligarchy?
an oligarchy is ruled by an elite group; an absolute monarchy is ruled by a single individual.
Difference between a chairman and managing director?
Chairman is a head of a group of company's. but the Managing director is a head of a single organisation.
Exaim the difference between an organism and a species?
An organism is a single-celled life form whereas a species refers to a group of organisms.
What is the difference between a null hypothesis and a research hypothesis?
The null hypothesis is the default hypothesis. It is the hypothesis that there is no difference between the control group and the treatment group. The research hypothesis proposes that there is a significant difference between the control group and the treatment group.
