• 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.

Please refer to the following steps for the complete solution to the problem above.

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