• Question - how to find all staff fname and direct supervisor's fname. MariaDB [dreamhome]> select * from Staff1; | staffNo | FName 1Name | position | sex | SA9 | Mary | SG14 Howe | Assistant | F | David | Ford | Supervisor | M Ann | Beech | Assistant IF | SG37 | SG5 | Susan | Brand | Manager | John | White | Manager | Julie | Lee | | SL21 | SL41 | F IM Assistant | F | | | | | DOB | 1970-02-19 | 9000.00 | B007 | 1958-03-24 | 18000.00 | B003 | salary | branchNo | superno | SG5 | SG5 | SG5 | 1960-11-10 | 12000.00 | B003 | 1940-06-03 | 24000.00 | B003 | 1945-10-01 | 30000.00 | B005 | 1965-06-13 | 9000.00 | B005 staff | Mary | Susan David | Susan Ann | Susan Susan | John Julie | John supervisor | | SL21 | NULL | SL21

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question - how to find all staff fname and
direct supervisor's fname.
MariaDB [dreamhome]> select * from Staff1;
| staffNo | fName | 1Name | position | sex
| SA9
| SG14
| Mary | Howe | Assistant | F
| SG37
| SG5
| David | Ford | Supervisor | M
| Ann | Beech | Assistant IF
Susan | Brand | Manager
|
| SL21
| John
| White | Manager
| F
| M
| SL41
| Julie | Lee | Assistant | F
| DOB
|
1970-02-19 | 9000.00 | B007
| 1958-03-24 | 18000.00 | B003
| 1960-11-10 | 12000.00 | B003
| 1940-06-03 | 24000.00 | B003
| 1945-10-01 | 30000.00 | B005
1965-06-13 | 9000.00 | B005
|
supervisor |
| staff |
| Mary | Susan
| David | Susan
| Ann | Susan
|
Susan | John
| Julie | John
| salary | branchNo | superno |
| SG5
SG5
| SG5
| SL21
| NULL
| SL21
|
Transcribed Image Text:Question - how to find all staff fname and direct supervisor's fname. MariaDB [dreamhome]> select * from Staff1; | staffNo | fName | 1Name | position | sex | SA9 | SG14 | Mary | Howe | Assistant | F | SG37 | SG5 | David | Ford | Supervisor | M | Ann | Beech | Assistant IF Susan | Brand | Manager | | SL21 | John | White | Manager | F | M | SL41 | Julie | Lee | Assistant | F | DOB | 1970-02-19 | 9000.00 | B007 | 1958-03-24 | 18000.00 | B003 | 1960-11-10 | 12000.00 | B003 | 1940-06-03 | 24000.00 | B003 | 1945-10-01 | 30000.00 | B005 1965-06-13 | 9000.00 | B005 | supervisor | | staff | | Mary | Susan | David | Susan | Ann | Susan | Susan | John | Julie | John | salary | branchNo | superno | | SG5 SG5 | SG5 | SL21 | NULL | SL21 |
Expert Solution
Step 1: Providing Introduction

For such questions, we can solve them using joins. Joins combine the data from two tables using the foreign key of one table into another table.

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