What is the use of group by clause?

Q: What are the conditions where a foreign key must not be null.

A: GIVEN: What are the conditions where a foreign key must not be null?

Q: Please what is an independent clause

A: Actually, given question is independent clause...

Q: what is selection structure?

A: In computer programming, the selection structure is basically the utilization of decision-making…

Q: The optional clauses of the select statement, if used, must be used in a specific order. Discuss the…

A: Optional clauses for SELECT statement: HAVING clause is an optional clause used with SELECT…

Q: Why might a MERGE statement be used?

A: MERGE statement The MERGE statement is used to make changes in one table based on values matched…

Q: The WHERE statement identifies the. Sort None of these Filter All of these Table Fields

A: The WHERE statement identifies the

Q: Explain the difference between main key, candidate key, and superkey..

A: Differentiation between main key, candidate key, and super key A super key is any collection of…

Q: what is the purpose of Where and having Clause?

A: Structured Query Language is abbreviated as SQL or also pronounced as See-Qwell. It is developed for…

Q: What is CLAUSE?

A: INTRODUCTION: SQL is a query language that allows you to query and get data from a database.…

Q: What is the purpose of using a group clause?

A: What is the purpose of using a group clause?

Q: The table shows a relation. ​ ​                                       ​ ​Which statement about the…

A: Which statement about the relation is correct?    A The relation is a function because each…

Q: What do you mean by user requirement

A: User requirements are typically written when discussing the use cases for a project. The…

Q: The ORDER BY clause can only be used in

A: Dear Student, The ORDER BY clause is used to sort the obtained columns of the result. In Oracle…

Q: What exactly is a sub procedure?

A: Sub procedures is a type of procedures

Q: The primary key and the candidate key must be distinguished.

A: Primary key The phrase main key refers to a candidate key that the database designer selects as the…

Q: group

A: SQL stands for structured query language and has a number of clauses to run queries. Major and…

Q: What types of relationships between values can you test with relational operators?

A: There are six relational operators:- 1) <: less than 2) <=: less than or equal to 3)…

Q: what is Procedure scope ?

A: Procedure scope: The scope of procedure variables are there only in the procedure in which they're…

Q: ccording to tables below, Write 3 SELECT statements to exemplify FULL OUTER JOIN statement

A: Full outer join -  Full outer join combines the result of left outer join and right outer join. It…

Q: How is the LIMIT clause useful?

A: Solution - In the given question we have to find the usefulness of the LIMIT clause.

Q: Show the structure view of the table to see the field name ,field properties and it's data type.

A: Structure view of table : Structure view of table means schema or skeleton of table. It describes…

Q: What is the meaning of the primary key?

A: A primary key, sometimes known as the main keyword, is a unique identifier for each entry in a…

Q: Problem 1.3: Modify the column width and data type of the JOB field of EMP1 tab Problem 1.4: Create…

A: Fist three problems will be solved. Please upload another question with the remaining parts. 1.3 The…

Q: Under what conditions can a UNION clause be used?

A: Given: Under what conditions can a UNION clause be used?

Q: What does the group by clause accomplish?

A: group by clause is used in relational database with select statement. In select statement group by…

Q: Question2: (Use the rules for Normal Forms to normalize the table given below) Normalize the table…

A: Answer) Relation T:A,B,C,D,E,F,G FDs:A,B -> DD -> E,FG -> C FD [A,B --> D] violates BCNF…

Q: What do you mean by user requirement.

A: To be determine: Describe user requirement

Q: What is a primary key?

A: Primary key: Primary key refers to an attribute which is used to uniquely recognize each tuple in…

Q: Referential integrity constraint" is a term used to describe this. Using real-world examples,…

A: Referential Integrity Constraint:-Referential Integrity Constraint guarantees that there must…

Q: What are double restrictions and how do they work?

A: DOUBLE CONSTRAINTS : The double constraints primarily enforce the double or dual variables or…

Q: img desc img id img type k is to create SQL query to develop a table for ne necessary constraints…

A: According to the given question we are required to develop a SQL query to create the table name…

Q: What are the differences between main key, candidate key, and superkey?

A: This question expanse abut main key, candidate key, and super key

Q: • Using "join" function for the string • The join function is a more flexible way for concatenating…

A: Below is the python program to implement join:

Q: What is Order By clause ?

A: Order By clause An Order By clause specifies that a Structured Query Language (SQL) SELECT…

Q: What exactly is Independent Sub Procedure?

A: Introduction: the question is about Independent Sub Procedure and here is the solution in the next…

Q: Explain the difference between Primary Key and Foreign Key , give example

A: We are going to understand difference between Primary Key and Foreign Key along with examples.

Q: What are the main differences between Primary key and Unique Key?

A:

Q: Q3) If you have a list of names for a group of employees, it is required to summation three salaries…

A: Firstly we should have their full names and their job description or the project name that they are…

Q: What’s the maximum depth allowed when nesting group functions?

A: Overview :

Q: Evaluate the phrase values driven

A: It is a way of big organizations to eveluate their social and community impact. It also aims to…

Q: Briefly explain descriptor table

A: Descriptor table: The descriptor table contains three tables. They are: Global descriptor table…