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I have three layers from three diferent database tables. When I click in other layer I want to change (with an action) the query of that three layers.

How can I do that? Thank you

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Welcome to gis.stackexchange.com. you need to be a bit more specific about your question. What software are you using? What's the type of you layers and where are they stored? –  Alexandre Neto Apr 15 '13 at 10:30
    
Ok, you're right, I forgot to mention the software, is the Quantum GIS –  user1573901 Apr 15 '13 at 10:45
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1 Answer 1

You could probably write a python plug in to do this, but as Alexandre Neto mentioned, you would have to be more specific as to the data you are working with. The type of layers? What sort of query are you running? How do you see the query behave when applying to the other layers? Please try to be more specific with you questions in order to get the best response. What you have asked can be open to interpretation which makes it more difficult to answer.

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Mike and Alexandre, thank you for you answers. –  user1573901 Apr 15 '13 at 15:54
    
Mike and Alexandre, thank you for you answers. I solved part of the problem by placing python code in action.But How can I have the field value from DB with Python? –  user1573901 Apr 15 '13 at 16:01
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That's a different question @user1573901 feel free to paste your actual code and reformulate your question. –  Francisco Puga Dec 26 '13 at 12:02
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