Write a query that returns the EMP_NUM and Number of ratings he/she earned (based on EARNEDRATING table, call this Num_RTG), for those who had at least got 1 rating earned, but the number of ratings he/she earned must lower than the average number of ratings for all employees who had earned ratings before, and such employee has been served as “Copilot” before
Write a query that returns the EMP_NUM and Number of ratings he/she earned (based on EARNEDRATING table, call this Num_RTG), for those who had at least got 1 rating earned, but the number of ratings he/she earned must lower than the average number of ratings for all employees who had earned ratings before, and such employee has been served as “Copilot” before
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter8: Advanced Sql
Section: Chapter Questions
Problem 69C: Update the DETAILRENTAL table to set the values in DETAIL_RETURNDATE to include a time component....
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Write a query that returns the EMP_NUM and Number of ratings he/she earned (based on EARNEDRATING table, call this Num_RTG), for those who had at least got 1 rating earned, but the number of ratings he/she earned must lower than the average number of ratings for all employees who had earned ratings before, and such employee has been served as “Copilot” before.
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