First I tried to restart the service in Windows Service Management, but that had no effect. After trying for some time, I found a stsadm command to stop the service:

stsadm -o spsearch -action stop

This deactivated the service in Windows Service Management and it was possible to start the service in Central Administation. Bevor doing so, I deleted the associated Search DB (WSS_Search or something). After starting a FullCrawl in SSP, everything worked fine.

1) Problem using Boolean values

If you are querying a boolean property, there are problems when using a comparison like

isDocument = true

It turned out that this doesn’t work correctly – a workaround is to simply use

isDocument != false

This issue is also described in a comment at the msdn.

2) Problem using OR

If you are using an OR clause in your query and one of the columns in this clause does not exist or has a null value in a result item, this item is not returned in the search even if the other value in the OR clause matches (!!).

This issue is described in detail in this blog entry.

Row Limit

Another pitfall concerning search queries is the following:

The RowLimit property of the SPQuery class is set to 50 by default – so if you don’t change this to 0 (unlimited) the search will always return 50 elements at most.

Get Folders and Items

When using the method list.GetItems(query) only the items of the top folder are returned by default (and no folder items!). If you need to return all elements including the folder items you can use the following attribute of the SPQuery class:

query.ViewAttributes += " Scope=\"RecursiveAll\"";

Derzeit befindet sich die von Microsoft und Federated Media gemeinsam entwickelte Applikation noch im Betastadium zeigt aber schon erste Einblicke in welche Richtung es gehen wird. Neben einer Auflistung der Bing Suchergebnissen, der Anzeige aktuell, populärer Twitter Themen via Tagcloud sowie der Auflistung von Realtime Tweets (übrigens alles derzeit ohne Werbung) gibt es die Möglichkeit die Suchergebnisse mit Twitter direkt weiterzuverbreiten.

Screenshot von bingtweets

Ob es reicht damit Google vom Thron der Suchmaschinenbetreiber zu stoßen? Zweifelhaft, aber es zeigt, dass sich auch Microsoft verstärkt mit neuen (Such-)Ansätzen ins Gespräch bringen will und den “Kampf” um die Suchkrone ernst nimmt.

Link zu bingtweets: http://bingtweets.com/