Comments on: Performance of content aggregation queries on multiple lists

By: Waldek Mastykarz

Waldek Mastykarz — Mon, 02 Jan 2012 12:30:45 +0000

@Ramana: Have you tried using the ListsOverride Property? By settings its value to you should be able to crawl all the different list types.

By: Ramana

Ramana — Sun, 25 Dec 2011 23:16:25 +0000

Dear Waldek,

If I need to roll up content from a document library, discussion forum, event library and a post library and show all the content together in a single webpart, what would be the best way to query in sharepoint 2010? I wanted to use CQWP but as the base list types are different it seems that is not possible

By: Waldek Mastykarz

Waldek Mastykarz — Thu, 11 Aug 2011 14:27:58 +0000

@Jorge: the whole thing about using cache is that it only makes sense when you're expecting to running the same query very often. If you have many different variations of the query the only way to really tell if it makes sense is to test it in your scenario.

By: Jorge

Jorge — Wed, 10 Aug 2011 22:45:37 +0000

Hi Waldek, it's a very concrete and useful article!

Did you use Cache for CrossListQueryInfo in your Tests?, Which of CrossListQueryCache.GetSiteData overloads did you use?(There are some ones which don\'t use cache, ref below).

I have an Scenario where the query condition can vary a lot, so I think that using cache could do an opposite effect. What do you think?

Regards!
Jorge Henao

Ref:
http://sharepoint.nailhead.net/2008/04/musing-on-crosslistquerycache-class.html

By: Waldek Mastykarz

Waldek Mastykarz — Mon, 25 Jul 2011 14:10:31 +0000

@Andrew: If you have that much content probably the only scalable solution is to use Search if you need to query across all of the content. For querying over specific portions (like specific site, etc.) other approaches should be sufficient.

By: Andrew

Andrew — Thu, 14 Jul 2011 03:18:20 +0000

We have a large site collection (over 1200 sites in same level) and both the SPSiteDataQuery and CrossListQueryInfo take lot of server resources (even with querying just 1 server template) and are unusable. Do you have any suggestions on aggregation here?

By: Waldek Mastykarz

Waldek Mastykarz — Mon, 17 Jan 2011 11:12:15 +0000

@Bhushan: CrossListQueryInfo works in the scope of a Site Collection only so you either have to run multiple CrossListQueryInfo-based queries and merge the results or use search instead.

By: Bhushan

Bhushan — Mon, 17 Jan 2011 06:22:31 +0000

Hi Waldek.. nice article!!
what I am trying to do is , to create a web part which will do the cross web application query

so is it possible to do this using CrossListQueryInfo class weburl property?

By: Waldek Mastykarz

Waldek Mastykarz — Tue, 17 Aug 2010 17:59:37 +0000

@Shakti: aggregating across Web Applications can be only done with Search. One more approach is to do aggregation per Site Collection and aggregate those, but it would perform very poorly.
As for the other question, your scenario is pretty complex, and so is the solution. Unfortunately you cannot do it any easier than you already know.

By: Shakti Srivastava

Shakti Srivastava — Tue, 17 Aug 2010 17:48:51 +0000

Hi,

I also have the same issue…I want data to be fetched from all the site collections in a web application…Can you plz suggest any way for this…Apart from Search…
I have tried a lot…BUt no luck….

Also i have another problem…if you may help me…
Problem:
I am trying to filter a list using Data View Web part…and CHoice Filter web parts…BUT the problem is that Data View Web Part (being a consumer for choice filters) CANNOT accept more than one value from choice filter web parts…
Is there any workaround or any alternative to this…
I thought to do this using SPQuery approach BUT i face 2 challenges then:
1. i have to show the result as a table BUT i want the look and feel like that of a Data View Web Part
2. CAML queries do not support more than 2 AND operators…even if they do support then generating that query dynamically is a tough task…

-Shakti