Using the university schema, write an SQL query to find the ID and name of each instructor who has never given an A grade in any course she or he has taught. (Instructors who have never taught a course trivially satisfy this condition.) but also ensure that you include only instructors who have given at least one other non-null grade in some course

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Using the university schema, write an SQL query to find the ID and name of each instructor who has never given an A grade in any course she or he has taught. (Instructors who have never taught a course trivially satisfy this condition.) but also ensure that you include only instructors who have given at least one other non-null grade in some course

Schema Diagram for University Database
student
takes
ID
ID
course_id
sec_id
semester
уear
grade
пате
dept_name
tot_cred
section
course
department
dept name
building
budget
advisor
course_id
sec_id
semester
year
building
room_no
time_slot_id
course_id
title
dept_name
credits
s id
i id
time_slot
time slot_id
day
start_time
end_time
prereq
instructor
classroom
course_id
prereq_id
ID
building
room по
сараcity
пате
dept_name
salary
teaches
ID
course_id
sec id
semester
уear
Database System Concepts - 6th Edition
3.3
©Silberschatz, Korth and Sudarshan
Transcribed Image Text:Schema Diagram for University Database student takes ID ID course_id sec_id semester уear grade пате dept_name tot_cred section course department dept name building budget advisor course_id sec_id semester year building room_no time_slot_id course_id title dept_name credits s id i id time_slot time slot_id day start_time end_time prereq instructor classroom course_id prereq_id ID building room по сараcity пате dept_name salary teaches ID course_id sec id semester уear Database System Concepts - 6th Edition 3.3 ©Silberschatz, Korth and Sudarshan
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