Please start any new threads on our new
site at https://forums.sqlteam.com. We've got lots of great SQL Server
experts to answer whatever question you can come up with.
| Author |
Topic |
|
sql-lover
Yak Posting Veteran
99 Posts |
 Posted - 2012-08-01 : 16:21:23
|
Hi,Got a query that is so slow, that just returns a timeout error to the user, via application.I checked the store procedure and execution plan and I believe this is the reason:WHERE TimeAdded between @StartDate and DATEADD(d, 1, @EndDate) How can I change that statement, while keeping logic, to a sargable one? I though about using >= and < plus and AND operator, removing the BETWEEN, but I have not tested it yet.Any suggestion is highly appreciated.Thanks. |
|
|
visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2012-08-01 : 16:35:10
|
| why do you think the above condition is NOn sargeable?------------------------------------------------------------------------------------------------------SQL Server MVPhttp://visakhm.blogspot.com/ |
 |
|
|
robvolk
Most Valuable Yak
15732 Posts |
Posted - 2012-08-01 : 16:35:49
|
That should already be sargable, if not:SET @EndDate=DATEADD(d, 1, @EndDate)...WHERE TimeAdded between @StartDate and @EndDate What do you mean by "sargable" anyway? If you're selecting all or most of the columns, and the date range is not very selective a table scan may likely be the most efficient. Make sure your statistics are up to date. |
|
|
|
sql-lover
Yak Posting Veteran
99 Posts |
Posted - 2012-08-01 : 16:49:54
|
| Ignore... no caffeine today ...The issue is lack of a proper Index. It was working before (as per the developer) a few years ago, but we do have much more data now.I'll deploy a proper Index and validate. |
|
|
|
visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2012-08-01 : 16:57:33
|
quote:
Originally posted by sql-lover
Ignore... no caffeine today ...The issue is lack of a proper Index. It was working before (as per the developer) a few years ago, but we do have much more data now.I'll deploy a proper Index and validate.
No problem  let us know the outcome------------------------------------------------------------------------------------------------------SQL Server MVPhttp://visakhm.blogspot.com/ |
|
|
|
|
|
|
|
|
How to make this query sargable