Write a query to display the author ID and the number of books written by that author. Sort the results in descending order by number of books, then in ascending order by author ID.

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
11. Write a query to display the author ID and the number of books written by that author. Sort the results
in descending order by number of books, then in ascending order by author ID.
AU ID
262
460
185
229
251
383
394
559
218
273
284
438
581
592
603
Books Written
3
NNWw
3
2
2
NN
2
2
2
2
1
1
1
1
1
1
1
Transcribed Image Text:11. Write a query to display the author ID and the number of books written by that author. Sort the results in descending order by number of books, then in ascending order by author ID. AU ID 262 460 185 229 251 383 394 559 218 273 284 438 581 592 603 Books Written 3 NNWw 3 2 2 NN 2 2 2 2 1 1 1 1 1 1 1
ERD:-
PK
CHECKOUT
Check Num
FK1 Book_Num
FK2 Pat_ID
Check Out Date
Check_Due Date
Check_In_Date
PK
BOOK
Book Num
Book Title
Book_Year
Book_Cost
Book_Subject
FK1 Pat_ID
-H-
PATRON
PK Pat ID
Pat_FName
Pat_LName
Pat_Type
WRITES
PK,FK1 Book Num
PK,FK2 Au ID
AUTHOR
PK AU ID
Au_FName
Au_LName
Au_BirthYear
Transcribed Image Text:ERD:- PK CHECKOUT Check Num FK1 Book_Num FK2 Pat_ID Check Out Date Check_Due Date Check_In_Date PK BOOK Book Num Book Title Book_Year Book_Cost Book_Subject FK1 Pat_ID -H- PATRON PK Pat ID Pat_FName Pat_LName Pat_Type WRITES PK,FK1 Book Num PK,FK2 Au ID AUTHOR PK AU ID Au_FName Au_LName Au_BirthYear
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