Write a query to display the patron ID and the average number of days that patron keeps
Question:
Write a query to display the patron ID and the average number of days that patron keeps books during a checkout. Limit the results to only patrons who have at least three checkouts. Sort the results in descending order by the average days the book is kept (Figure P7.104).
Transcribed Image Text:
Figure P7.104 Average Days Kept by Patron PAT_ID Average Days Kept 1160 7 1185 6.67 1165 5.67 1207 5.5 1209 5.33 1172 4.5 1183 4.33 1181 3.67 1171 3.67 1161 3.33 1210 2.33 1229 2
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Related Book For
Database Systems Design Implementation And Management
ISBN: 9780357673034
14th Edition
Authors: Carlos Coronel, Steven Morris
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