sql server - Sum Function with division -


i trying figure out correct format when using sum function division:

which 1 correct?

sum(filesize/1024)

or 

sum(filesize)/1024

the filesize column measurement in kilobytes converting megabytes.

they mean different things. sum(filesize/1024) reduces file size megabytes, , sums megabytes. each file, "forgets" size in excess of megabytes boundary, underreport total file size.

sum(filesize)/1024 report correct size in megabytes-- rounded down.


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