query for state of task

[Michael Hanik-2]

Hello guys,

I have currently installed SMW on localhost  and am trying to figure out a problem:

In the live version I want to have pages for different projects that include lists of tasks for users involved in these projects. It may look like this:
USER A
taskuserA=description of task (a property of the type text)
date=when is the task due (a property of the type date)
state=not begun, working on it, done (a property of the type text)

taskuserA=description of task (a property of the type text)
date=when is the task due (a property of the type date)
state=not begun, working on it, done (a property of the type text)

etc., I think you get the idea. So far, so good; now comes the real issue: I want each user to have on his user page a list of those tasks that need to be done (i.e. all tasks except those that are marked done). To create this list I am using inline queries like
{{#ask: [[Category:Project]] [[taskuserA::*]]
| ?date
| ?state
| format=table
| mainlabel=project
}}

My problems are:
1. If a user has several tasks on one project page, the query results are mixed (dates from one taks are on the line of another task, the same goes for the states of the task). Is there any way I can avoid this, e.g. by choosing other data types?
2. How can I exclude those tasks that have already been done?

Information about installation:
MediaWiki 1.13.1
extensions: Semantic MediaWiki, Semantic Forms, ParserFunctions, Cite, CreateBox

Any kind of support is much appreciated. Let me know if you need some further information.

Best wishes,
Mike

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