Why does the order of the operands (tables) matter in an EXCEPT (MINUS) query but not in a UNION query?

Q: In what situations is it necessary to add a GROUP BY clause in a query?

A: Group By clause is used when we have to group the data into groups.  It is used when we want to…

Q: Write a query to fetch employee names and salary records. Display the employee details even if the…

A: Given: Write a query to fetch employee names and salary records. Display the employee details even…

Q: Build two SQL queries that combine film and category information. List the film’s title, film’s…

A: Creating Film table: CREATE table FILM (    filmID   NUMBER(3) NOT NULL,    filmTitle  VARCHAR2(50)…

Q: Write an SQL query to find how many years in between the current date and return_date, arrange the…

A: Here, Query instructions are given.

Q: Question:1 Show all data from employee table where name should be in ascending and salary in…

A: Since you have not provided the database name to write the SQL query so I am using MySQL database to…

Q: Write a SOQL Query to take the Account name , id from thee account object with the 10 record limit…

A: Brief About the SOQL: Sales is the world greatest CRM platform the use the query language for the…

Q: Write a query to display the guest names who are from Ooty. For instance, the guest name "geeta…

A:

Q: Write a query to get the number of different types of jobs available in the university table.…

A: Functions used in Query: The LIKE operator is used to search for a specified pattern in a column.…

Q: How many join conditions are needed for a query that joins five tables?

A: Join: In the SQL a join clause is used to combine the data of two or more tables based on a common…

Q: What is syntax of create table in SQL ?

A: CREATE TABLE: CREATE TABLE is the keyword that tells the database system exactly what you want to…

Q: Write a query to display the guest names who are from Ooty. For instance, the guest name "geeta…

A: Question Breakdown: According to the problem statement provided we should upgrade the SQL query to…

Q: SQL queries

A: According to the question, we need to write the SQL queries of the following questions: Write a…

Q: .Write a query to list the first name and last name of all authors. Concatenate the first and last…

A: We need to select the name of both editor and author and do the union. The query for the same as per…

Q: What exactly is a query?

A: Query: A query is a request for data or information from a database table or combination of tables.…

Q: department_id from employees table. Instead of displaying department_id display the related…

A: Create a query for displaying emp_id,first_name,last_name,department_id from employees table.…

Q: Use %ROWTYPE for your cursor and use 3 tables in this activity - EMPLOYEES, JOBS, and DEPARTMENTS…

A: PL/SQL is a programming language that combines SQL with procedural capabilities. Oracle Corporation…

Q: write a SQL query to find fifth maximum salary from table Employee (EID, EName, Salary)

A: To Find the 5th maximum salary we will use subqueries or co-related queries.  In the  inner query we…

Q: How many rows are returned in a Cartesian join between one table having 5 records and a second table…

A: Cartesian Join: In relational databases, the Cartesian Join between two tables refers to as the join…

Q: This is the problem: (from Database Systems Book, 13th ed) Write a query to display the author last…

A: Create table AUTHORS_OF_BOOKS using the below query: SQL QUERY: /* Create a table called NAMES…

Q: Write an SQL query using the ALTER TABLE and ADD operator to add anattribute named ORDERDATE with…

A: ALTER TABLE command: The ALTER TABLE command is used to add new columns, modify columns in an…

Q: What is the evaluation order for the Boolean operators (AND, OR, NOT) in an SQL command? How can a…

A: The AND, OR and NOT operators can be used in combined fashion with WHERE Clause.  NOT operator…

Q: ery to Show how many indices in employee table and what are their names?

A: Program Approach:   1- In this query required group by clause and aggregate function. 2- With the…

Q: Write query to create given table 'MAIN'

A: Given, Table:

Q: Consider a Employee table and write queries Write a query to find the Nth highest salary from the…

A: In the question it has been mentioned that consider the employee table so i am using this employee…

Q: Question:1 Show all data from employee table where name should be in ascending and salary in…

A:

Q: Write query to create given table.

A: Given, We have to write the SQL query to create the given users table: Table:

Q: How do you specify conditions for an Access query?

A: How do you specify conditions for an Access query?

Q: Develop a PL/SQL block that would go through all the employees from EMPLOYEES table who work in…

A: Solution SELECT * FROM departments where department_id =90; BULK COLLECT Clause for Selecting…

Q: With the use of a group function, which clause can be used to restrict or filter the groups returned…

A: To be determine: Which clause can be used to restrict or filter the groups returned by a group…

Q: Write sql code for Use derived tables and joins to create a list of players who have scored more…

A: Fielding Table is not given but it is mentioned to consider same as other table. So, we can join all…

Q: Write an SQL query that will select OrderID and OrderDate from theOrders table and OrderDetailID…

A: To combine rows from more than “2” tables based on a related column between them, a JOIN clause is…

Q: Write an appropriate SQL query to determine if there are any students that are not registered for…

A: Given: Write an appropriate SQL query to determine if there are any students that are not registered…

Q: The Foreign key key is the field in the related table used to connect to the primary key in another…

A: here have to determine about key in table.

Q: . Write a SQL query to display the total salary of each employee adding the Salary with Variable…

A: Given, Table EmployeeDetails: EmpId FullName ManagerId DateOfJoining City 12 John Snow  321…

Q: Write an SQL query using the UPDDATE and SET operator that willoverwrite all values containing 16…

A: Update statement: The UPDATE statement in the SQL is used to modify existing records present in the…

Q: rrect Query from table given.

A: Querry is below:

Q: Write a query to display the patron ID, patron full name, and patron type for each patron sorted by…

A: ORDER BY is the command used to sort the result to display

Q: Write a query to delete job with id of 10 from job table

A: Delete From Job Where JobID= 10;

Q: Write a query to get the maximum and minimum salary from the senators table (in that order).

A: The answer is given below.

Q: What is the difference between an EXCEPT (MINUS) query and a UNION query?

A: Introduction: The MINUS operator is used to get a result that appears in the first table but not in…

Q: Write an appropriate SQL query to display all the STUDENT_SURNAMES and STUDENT_NAMES, as well as the…

A: Answer: 1. Let's create a sample table first:  CREATE TABLE STUDENTREC(STUDENT_NAMES VARCHAR(255),…

Q: Write query "Display a list of all data contained in the BOOKS table"

A:

Q: Write a query to fetch all the records from the Employee table ordered by Lname in descending order…

A: Given, Table name = Employee Column name: Lname Department We can write the required SQL query…

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.