Distinct and Average

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Hello all,

I need to display as,

Total No of employees

Officer, staff, Contact

total no of working hours:officer/total no of working hrs
staff/total no of working hrs

my code as:

SQL

select count(distinct Name) as NoOfPersons,sum(duration) as tot 
from Staff,Timesheet where Staff.StaffCategoryID='1'

it will multiply the NoOfPerson * tot

How to make a correction and find out the average for it

Help pl

Regards,
Pravin

Posted 21-Aug-11 22:49pm

praveena.karthi

Updated 21-Aug-11 23:26pm

Herman<T>.Instance

v2

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Herman<T>.Instance · Answer 1 · 2011-08-21T23:28:00

Solution 1

it is pretty simple. you join the table Staff and Timesheet without stating what combines both tables.
Your query needs something like below:

SQL

select count(distinct Name) as NoOfPersons,sum(duration) as tot
from Staff as s,Timesheet as t 
where s.StaffCategoryID='1'
and s.fieldname = t.fieldname

Posted 21-Aug-11 23:28pm

Herman<T>.Instance

Updated 21-Aug-11 23:41pm

v2