Do not want new version for rdl file for each snapshot rendering

Question

ssrs 2012 sp1 sharepoint mode, sharepoint 2013
option set for the report - render from snapshot, a schedule set for the snapshots creation
each snapshot rendering adds new viersion to the rdl file with updated field
Execution DateTime - not really sure who needs this "feature" but it would be nice to switch this off/fix a bug
Sergey Vdovin

Answer 1

Hi Sergey,
Sorry for my misunderstanding.
In SharePoint, the generation of a report version is determined by the modifications of the entire SharePoint list item. If any field of the list item is changed , it will create a new version for the list item. For a report RDL file uploaded to a SharePoint
document library, the report version is not just created based on the modifications to the report content. In your case, once it has generating a new snapshot, it will modify the column Execution DateTime value.
Besides, once we configure a report to render based on a snapshot, the Execution Datatime field will be available in the library view. However, if we create snapshots manually rather than based on a schedule, this field won’t be updated, hence, the report
version won’t be added. If we configure the snapshot to be generated based on a schedule, the Execution Datetime will be updated each time the snapshot is generated, thus the report version will be updated. This is actually a by design inconsistent behavior
between Reporting Services and SharePoint.
To avoid this behavior,  on Reporting Services side, you need to either disable the snapshot or configure the snapshot not to run based on a schedule. Taking into account that this may be unacceptable for your, there is a possible approach on the SharePoint
side. In SharePoint, if we want an item to update without creating a new version based on a judgment condition, we can use Visual Studio workflow and with a code to determine when to update list item. Here is some resource about this topic for your refer:
http://social.msdn.microsoft.com/Forums/sharepoint/en-US/750658ca-5a5d-49cb-99c2-70335fd5375b/updating-an-item-in-list-with-out-creating-a-version?forum=sharepointdevelopmentprevious
http://www.codegain.com/articles/sharepoint/developmentprogramming/what-is-the-difference-between-splistitem-systemupdate-and-splistitem-update-method.aspx
Since the approach is related to SharePoint development, if you need more help, I recommend you post a question in the following forum to get dedicated support:
http://social.msdn.microsoft.com/Forums/sharepoint/en-US/home?forum=sharepointdevelopmentprevious
Best Regards,
Alisa Tang
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