For the following Employee database, write a query to find the ID of each employee with no manager. Note that an employee may simply have no manager listed or may have a null manager. Write your query using an outer join and then write it again using no outer join at all.

For the following Employee database, write a query to find the ID of each employee with no manager. Note that an employee may simply have no manager listed or may have a null manager. Write your query using an outer join and then write it again using no outer join at all.

Database Systems: Design, Implementation, & Management

12th Edition

ISBN:9781305627482

Author:Carlos Coronel, Steven Morris

Publisher:Carlos Coronel, Steven Morris

Chapter8: Advanced Sql

Section: Chapter Questions

Problem 52P

See similar textbooks

Related questions

Q: Computer Science DBMS course. Compare hash join, sort-merge join, and index join. When would you…

A: Hash Join :It is also known as “go-to-guy” in case of join operators. This means that in case no…

Q: Using the relations given in the appendix, write the SQL statements to perform the following…

A: i. The INSERT command is used to add a new record row to an existing table. The following statement…

Q: Implement the following clauses on a database of your choice and produce results. (Write query and…

A: The BETWEEN operator is used to select the values of the queries within a given range. The JOIN rule…

Q: Write a query to display a brand name and the number of products of that brand that are in the…

A: GROUP BY is used to group the rows and count based on brand name ORDER BY is used to sort the result…

Q: Write a query to list clients ID, book number and days kept for each check out. Note: days kept is…

A: Below are the two commands that you can try: 1. Select PATRON.PAT_ID, BOOK.BOOK_NUM,…

Q: When does the query select * from student natural full outer join takes natural full outer join…

A: Given that: When does the query select * from student natural full outer join takes natural full…

Q: For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note…

A: Query using an outer join is as follows, select ID from employee natural left outer join manages…

Q: Write a query to find the name of the student(s) who has scored maximum mark in Software…

A: As per the given problem statement we are required to develop a SQL code to find the name of the…

Q: Explain the difference between an inner join and an outer join.

A: The join clause is a special keyword in a SQL (Structured Query Language), which is used to combine…

Q: With the three join types included with the outer join classification (LEFT OUTER JOIN, RIGHT OUTER…

A: Outer join: Outer join is the joining method in which that gets all rows with matching values in…

Q: Write a query that show the manager data like this. ename job JONES…

A: Let the name of the table be Employee

Q: 1. Display records of employee id, last name, first name of employees' table.

A: The employee table consists of 8 columns. SQL(Structured Query Language) has three basic commands…

Q: Write the following queries. 1. Write a query to get the First Name and Last Name of all employees…

A: As per company rules experts are only supposed to Solve one question.So kindly post another…

Q: From the database scheme write the query(all tables are empty) 1) Insert your name and your phone…

A: The given diagram is a logical model for the rent of apartments where the apartment has a building…

Q: Using the relations in the appendix, write the following queries in SQL: i. Display a list of all…

A: (i) The required query is: SELECT ID, COUNT(section_id, semester) as 'Count of Sections Taught'FROM…

Q: Consider the library database of Figure 3.20. Write the following queries in SQL.For each publisher,…

A: Here, Three tables are created. member book borrowed The values are inserted into the tables.

Q: For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note…

A: Database: The database contains the collection of information organized in such a way that can be…

Q: .. Write a database description for each of the relations shown, using SQL DDL (shorten, abbreviate,…

A: SQL is the structured query language, that's used to extract and manipulate data from the table. It…

Q: In a sql database give an example of a search problem that will work with an inner join and will not…

A: Find the answer given as below :

Q: Using the university schema, write an SQL query to find the ID and name of each instructor who has…

A: SQL(structured query language) is used in relational databases to query information and manipulate…

Q: Differentiate the type of query given below and interpret the meaning step-wise if it’s a sequential…

A: Sequential Query: The sequential query is a series of multiple master queries in which the first…

Q: The ER diagram of the database is given above. Write the following queries. 1.Write a query to get…

A: As said in the question, we need to use employees table

Q: One row in the PAT_ENC table represents one patient encounter. One row in the ORDER MED table…

A: Answer: Explanation: For the above problem, the table PAT_ENC contains Patient ID as the primary key…

Q: use national join plz Consider the education database with student and scho ,where the primary keys…

A: We have created student and school tables, where the primary keys are underlined. Using below Given…

Q: Consider the below Student table and write the appropriate relational algebra query: City SNAME…

A: Relational algebra query : It is a step by step process to obtain the result of the query. It uses…

Q: For the database Figure, write a query to find the ID of each employee with no manager. Note that…

A: Query using an outer join is as follows, select ID from employee natural left outer join manages…

Q: Consider the following database. Write a SQL query to express the query student (person_name,…

A: finding sql query for the given equation

Q: Consider the library database of Figure 3.20. Write the following queries in SQL.Find the member…

A: Given: Library database with three-relations such as member, book, and borrowed. Objective: This…

Q: For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note…

A: Query for finding the employees with no manager: Consider the “Employee database” given in Figure…

Q: In a complex join, how is the number of tables you wish to join related to the number of WHERE…

A: According to the information given:- We have to define the complex join in number of table and…

Q: Write a query that uses NATURAL JOIN TO connect the EMPLOYEE and EMPPROJACT table. Include the…

A: The above question is solved in step 2 :-

Q: Can an outer join be easily implemented when joining more than two tables? Why or why not?

A: Outer join is not easily implemented in more than two tables.

Q: Using the STUDENT and PROFESSOR tables, illustrate the difference between a natural join, and…

A: Explanation: PRODUCT operator: It is used to find the Cartesian product of two attributes present…

Q: The ER diagram of the database is given above. Write the following queries. 1. Write a Query to…

A: As said in the question, we need to use employee table

Concept explainers

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.

Question

For the following Employee database, write a query to find the ID of each employee with no
manager. Note that an employee may simply have no manager listed or may have a null manager.
Write your query using an outer join and then write it again using no outer join at all.
employee (ID, person_name, street, city)
works (ID, company_name, salary)
соmpany (compaпу лате, сіty)
manages (ID, manager_id)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

How to proceed

VIEW

Query without join

VIEW

Query with join

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Delete the OWNER_INDEX 3 index from the OWNER table.
Considering Vaccination Database, write queries to: Display the Subject CNIC, Name, Contact, Dose1 Center, and Dose2 Center as shown below: CNIC Name Contact Dose1 Center Dose2 Center 22401-6645321-1 Nasir 3409991112 Lachi Kohat 2 14301-6045321-5 Shahab 3409991112 kohat 3 Dara The subjects who have been vaccinated different types in Dose1 and Dose2. For instance, subjects who were vaccinated ‘Sinovac’ in the first dose, while Pfizer in the second dose.How many Viles of each type have been consumed so far. How many subjects are vaccinated from expired viles. Suggest the name of Incharge for the best performance award based on the highest number of subjects vaccinated on a single day
Using the Henry Books database, add the new title from Stephen King to the wrote table: Book code = 3578 Author number = 6 Edition = 1 You will insert 2 snips for this question. What construct did you use to add a row to the wrote table. Insert the snip of the construct used: Insert the snip of the wrote table. Be sure the new row is displayed:
Create the following queries for the “books” database. For each query make sure to only include those tables that are necessary to answer the question. Your answers for each of these questions should consist of the SQL query that will produce these lists, NOT the list itself. For each type of book (e.g. biography, children, etc), show the number of those books that are 450 pages or longer. The column heading should be '# of long books'. Modify the answer to the previous question so that only those types for which there are at least 2 long books are displayed For each publisher, list the name of the publisher and total number of pages that the publisher has published in all their books (ie. add up all the pages in all books for each publisher). Show the publishers who have published the most pages at the top of the result list. Modify the previous query so that only publishers who have published at least 1250 pages will show up. List each publisher's name and the numbers of…
Using the Henry Books database,update the paperback field for the book titled Black Houseto Y. You will insert 2 snips for this question. Insert a snip of the construct used to update the table: Insert your screen shot of the Books table here (be certain Black Housedisplays): Using the Henry Books database,add a new row to the AUTHORS table. The new author’s name is John Grisham. You will insert 2 snip s for this question. Insert a snip of the construct used to update the table: Insert your snip of the Authors table here showing the update: Using the Henry Books database,create a view named Paperback. It consists of the book code, book title, publisher name, and book price for every book that is available in paperback. You will insert 2 snips for this question. Insert a snip of the construct used to create this view: Run a query using this view and insert a snip of the resultset: Using the Henry Books database,write a stored procedure that…
The ER diagram of the database is given above. Write the following queries. 1. Write a query to get the First Name and Last Name of all employees from department with ids 30 and 40; Hint: Use the employees table. 2. Write a query to get all first name, last name and emails of employees who make commission greater than 0. Hint: Use the employees table. 3. Write a query to get the Average salary of all employees working as Programmers. Hint: Use the employees table. 4. Write a Query to get the First Name, Last Name and Salary of the employee who is paid the lowest salary in the company. Hint: Use the employees table. 5. Write a Query to get the maximum, minimum and average salary of each department. Hint: Use the employees table.
Create a query that will show the person id and fee for all players in the football database. Additionally create a column in your output to show the amount of increase if the fee were increased by 20%. Also produce a column that will show what the new fee would be with the 20%. Sort your results showing those that do not pay a fee at the bottom of your list. Finally make sure your column headings read: Person ID, Current Fee, Increase and New Fee. Make sure your spelling and case EXACTLY match what is specified.
SQL SUM Problem -SELECT * FROM [Sale Order] INNER JOIN Product ON [Sale Order] productID = Product.productID here i've joined two tables , now what i need to do is sum the productPrice of the rows with the same customerID .. order id and product id are the primary key