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msdb..backupset : Query Error. Expand / Collapse
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Posted Friday, August 17, 2012 5:24 AM


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While executing the below query to find the results getting the below error:

Do I need to use cast/convert statement?

Msg 8117, Level 16, State 1, Line 1
Operand data type nvarchar is invalid for sum operator.



select sum(database_name), backup_size/(1024*1024),
backup_finish_date,type from backupset where type ='D'
--order by backup_finish_date asc
group by database_name


Thanks.
Post #1346476
Posted Friday, August 17, 2012 6:07 AM
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No. Cast/convert will not help here. You need to remove SUM() around database_name.

Evenafter that the query fails.

What are you trying to achieve? Other may help you to rewrite the query.
Post #1346496
Posted Friday, August 17, 2012 6:09 AM
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Hello,

database_name is a nvarchar, how can you pass it to SUM?

alter the query.



Regards
Durai Nagarajan
Post #1346497
Posted Saturday, August 18, 2012 1:20 AM
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Why do u want to sum database names????? sum is an aggregate function..how can it sum varchar column? what r u trying to achieve?
Post #1346816
Posted Saturday, August 18, 2012 1:22 AM
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I think you are trying to find the combined backup size of all databases..is it?
Post #1346817
Posted Saturday, August 18, 2012 2:27 AM
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... or trying for COUNT(database_name) ...huh ?
Post #1346826
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