in a database with a products table and orders table, you want to see which products have not been ordered. what type of query should you create?

Answers

Answer 1

To find the products that have not been ordered, you can use a left outer join between the products and orders tables, and then use a filter to only include rows where the order_id column in the orders table is null.

This query will return all rows from the products table, even if there is no corresponding row in the orders table. The result set will include all columns from the products table, and any null values will appear in the columns from the orders table.

You can also use a similar query with a different syntax, depending on the specific database management system (DBMS) you are using. For example, in MySQL you can use a LEFT JOIN instead of a LEFT OUTER JOIN, and in M!crosoft SQL Server you can use a LEFT JOIN with the ON clause replaced by a USING clause.

Learn more about Find unordered product, here https://brainly.com/question/17649345

#SPJ4

Related Questions

When an object is passed as an argument, ________ is passed into the parameter variable.

Answers

A class method is similar to an instance method, except its first argument is a class object.

Remember that when an instance method is called from an instance object, the instance object is automatically supplied as the method's first argument. A parameter variable is a variable that is only available to the function that gets the argument. That is, the value of the argument is copied into the parameter variable. A constructor is a method that is invoked at the start of an object's lifecycle to create and initialize the object, which is known as creation (or instantiation). The acquisition of resources may be part of the initialization process. In most languages, constructors may contain parameters but do not typically return values.

Learn more about variable here-

https://brainly.com/question/13375207

#SPJ4

What is the difference between planks and boards?

Answers

Answer:

Planks are often used as a work surface on elevated scaffolding and need to be wide enough to provide strength without breaking when walked on. The wood is categorized as a board if its width is less than 21⁄2 in (64 mm), and its thickness is less than 11⁄2 in (38 mm).

In which cloud service level are applications delivered via the internet?

Answers

SaaS stands for software as a service. The most popular choice for enterprises in the cloud market is software as a service, generally referred to as cloud application services.

What do cloud services offer to aid with security and privacy?

Data security is a feature of the top cloud computing security solutions. To stop unauthorized parties from obtaining private information, they have security methods and policies in place, such as strict access controls and data encryption.

Which of the following best represents the Platform as a Service (PaaS) cloud computing service model?

Everything a developer needs to create an application for the cloud infrastructure is provided by O Paas.

To know more about SaaS visit :-

https://brainly.com/question/11973901

#SPJ4

Why do people use desktop computers?

Answers

You may swap out the parts you need and upgrade only as needed rather than having to buy a brand-new computer. This is a terrific asset to have if you require a larger SSD or a higher graphics card to play the newest games or run out of internal storage.

What is Pros of Desktop Computers?Customizable - One of the great things about desktop computers is that you can quickly switch out any component as long as it is compatible with the other components you have chosen for your build.It's ideal if you want to transition to 4K resolution monitors, for example, to be able to upgrade and replace the monitor at will because it's independent from the tower.Repairable—If a desktop computer ever develops a problem, it's relatively simple to enter inside the case, repair, or replace the problematic part. The CPU/GPU may be integrated with the motherboard or soldered onto it, making it difficult to replace or repair in all-in-one (AiO) computers. You might have to purchase a new AiO if something malfunctions.It will undoubtedly save you money in the long run if you're willing to fix or replace the desktop PC's components yourself.Cost-effective—Desktop PCs are less expensive than AiO systems, in addition to saving money on maintenance. In order to fit all of their components into the back of their monitors, AiO PCs use smaller components made for mobile computers, which demands more engineering and development efforts. Even though the monitor of an AiO computer is often thicker than a conventional monitor, there isn't nearly as much wasted space as there is with the large chassis of the majority desktop PC.More potent—Although a desktop PC does have a lot of empty space inside the casing, this also makes room for fans and other cooling systems to move air and keep your components cool. Due to their tendency to generate a lot of heat when subjected to demanding workloads like 3D rendering, AAA gaming, querying massive databases, and data mining, components like the CPU, GPU, and memory are frequently constrained by a phenomenon known as thermal throttling. For optimum function, keep them cool.

To Learn more About brand-new computer refer to:

https://brainly.com/question/21474169

#SPJ4

2. Busy intersection There is a busy intersection between two one-way streets: Main Street and 1st Avenue. Cars passing through the intersection can only pass through one at a time. When multiple cars arrive at the intersection at the same time, two queues can build up - one for each street. Cars are added to the queue in the order at which they arrive. Unfortunately, there is no traffic light to help control traffic when multiple cars arrive at the same time. So, the local residents have devised their own system for determining which car has priority to pass through the intersection: - If in the previous second, no car passed through the intersection, then the first car in the queue for 1 st Avenue goes first. - If in the previous second, a car passed through the intersection on 1st Avenue, then the first car in the queue for
1st
Avenue goes first. - If in the previous second, a car passed through the intersection on Main Street, then the first car in the queue for Main Street goest first. Passing through the intersection takes 1 second. For each car, find the time when they will pass through the intersection. Function Description Complete the function getResult in the editor below. getResult has the following parameters: int arrival [n]: an array of
n
integers where the value at index
i
is the time in seconds when the
i th car arrives at the intersection. If arrival[i]
=
arrival[j] and
i , then car
i
arrives before car
j
. int street[n]: an array of
n
integers where the value at index
i
is the street on which the
t th car is traveling: Street and 1 for 1 st Avenue. Returns:
int[n]:
an array of
n
integers where the value at index
i
is the time when the
i th car will pass through the intersection Constraints -
1≤n≤10 5
-
0≤arrival[i]≤10 9
for
0≤i≤n−1
- arrival[i]
≤
arrival[i
+1]
for
0≤i≤n−2
-
0≤s
street
[i]≤1
for
0≤i≤n−1

Answers

The program that can be used to illustrate the information of busy intersection between two one-way streets is given below.

The program that features the cars will be:

def getResult(arrival, street):

# Write your code here

result = []

# The first car arrives on Main Street at time 0. The first car arrives on 1st Avenue at time 0. The second car arrives on Main Street at time

1. The third car arrives on 1st Avenue at time 5.

time = 0

main_street_queue = []

first_avenue_queue = []

while len(main_street_queue) > 0 or len(first_avenue_queue) > 0:

if len(main_street_queue) == 0:

car_to_add_to_result = first_avenue_queue.pop(0)