I have problem with indexing pages with querystring like MyPage.aspx?id=8?status=3 MyPage.aspx?id=9?status=3 MyPage.aspx?id=10?status=3.
I have all of these pages in sitemap and sitemap is successfully uploaded with Google webmaster tools.
But Google indexes only one page from all with different querystring. Already tried uploading new sitemap - the same.

How can I tell Google that pages with diferent querystring parameter id should be indexed separately?
What are general rules of using querystring for better indexing by search engines?

I won't answer your question, because i will give a free advice

Don't make your site with this kind of page ... just paramentres in URL ...

Try to put the main keyword on url ... this is gonna help you a lot with google !

Just get links to the pages and make the pages worth indexing.

Thank you guys, there is really nothing to worry about.
The reason was another site domain. Google indexed it instead of newer domain.

Originally Posted by TimFromKharkov

I have problem with indexing pages with querystring like MyPage.aspx?id=8?status=3 MyPage.aspx?id=9?status=3 MyPage.aspx?id=10?status=3.
I have all of these pages in sitemap and sitemap is successfully uploaded with Google webmaster tools.
But Google indexes only one page from all with different querystring. Already tried uploading new sitemap - the same.

Submitting a sitemap does NOT guarantee Google will index the pages in the map.

Originally Posted by TimFromKharkov

How can I tell Google that pages with diferent querystring parameter id should be indexed separately?

You don't need to tell Google this. That is EXACTLY what Google and all search engines do already. They see each unique URL (including the query strings) as a separate page in their index.

Originally Posted by TimFromKharkov

What are general rules of using querystring for better indexing by search engines?

The best rule is to avoid using query string parameters if possible. They lead to all kinds of URL canonicalization issues.

For example, the following URLs might all render the EXACT same page/content... but are seen by the engines as different pages:

http://www.example.com/index.php?pro...bcat=12&sort=4
http://www.example.com/index.php?catid=23&productid=1&subcat=12&sort=4
http://www.example.com/index.php?catid=23&subcat=12productid=1&&sort=4
http://www.example.com/index.php?catid=23&subcat=12&sort=4&productid=1
http://www.example.com/index.php?productid=1&subcat=12&catid=23&sort=4
http://www.example.com/index.php?productid=1&subcat=12&sort=4&catid=23
http://www.example.com/index.php?productid=1&catid=23&sort=4&subcat=12

Its better that your links to be search engine friendly that Google and other search engines can read and index them easier. But Google indexes even not search engine friendly pages if Google find it good and unique. You can make backlinks for your pages by submitting them to social bookmarks and article submission that Google indexes the faster.