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SQL Time Difference and Comparison

Posted on 2014-02-05
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Last Modified: 2014-02-05
Hello Experts,

I am currently developing a script that will compare times and get the time difference using the following script.

declare @update_time datetime
declare @current_time datetime
--declare @inactive varchar(1)
--variable to hold y/n value if time difference indicates table to be inactive

set @update_time = (
SELECT last_user_update
FROM sys.dm_db_index_usage_stats
WHERE database_id = DB_ID( 'NGDemo')
AND OBJECT_ID=OBJECT_ID('aa_test')
)

set @current_time = GETDATE()

select convert(varchar(5),DateDiff(s, @update_time, @current_time)/3600)+':'+
convert(varchar(5),DateDiff(s, @update_time, @current_time)%3600/60)+
':'+convert(varchar(5),(DateDiff(s, @update_time, @current_time)%60)) as [hh:mm:ss]

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Would it be possible to set the @inactive variable to 'Y' if the time difference is greater than say 1 hour?
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Question by:robthomas09
1 Comment
 
LVL 24

Accepted Solution

by:
chaau earned 500 total points
ID: 39837509
If I understood you correctly, this is what you are after:
declare @update_time datetime
declare @current_time datetime
declare @inactive varchar(1)
--variable to hold y/n value if time difference indicates table to be inactive

set @update_time = (
SELECT last_user_update
FROM sys.dm_db_index_usage_stats
WHERE database_id = DB_ID( 'NGDemo')
AND OBJECT_ID=OBJECT_ID('aa_test')
)

set @current_time = GETDATE()

select convert(varchar(5),DateDiff(s, @update_time, @current_time)/3600)+':'+
convert(varchar(5),DateDiff(s, @update_time, @current_time)%3600/60)+
':'+convert(varchar(5),(DateDiff(s, @update_time, @current_time)%60)) as [hh:mm:ss],
@inactive = CASE WHEN DateDiff(s, @update_time, @current_time) >= 3600 THEN 'Y' ELSE 'N' END

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