Question: Please explain in detail why you chose each answer: No written work. 27. In the following query, how many records should be in the result?

Please explain in detail why you chose each answer: No written

Please explain in detail why you chose each answer:

No written work.

27. In the following query, how many records should be in the result? select EmployeeID avg(Hourly Rate) hravg, count (HourlyRate) hrcount max(Hourly Rate) hrmax, min (HourlyRate) hrmin, sum(Hourly Rate) hrsum, stdev(HourlyRate) hrsd, var (HourlyRate) as hrvar FROM [PTO] - [dbo].[Hours ] Group by EmployeeID a. As the number of employees b. We will get an error c. One record d. It is not possible to know, since we do not know the size of the Hours table 28. In the following query, the Hours table includes information that the employees fill up about the number of hours they worked and on which projects they worked. What is the results of the following query (which include sub-query)? select * from [dbo].[Hours ] where Employee ID in (select ID from [PTO]. [dbo]. [People] where HireDate

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