Is it possible to have a custom Content Query Web Part that has two grouping levels?
Group 1 Group A Item 1 Item 2 Group B Item 3 Item 4 Group 2 Group A Item 5 Item 6 Group B Item 7 Item 8
It is, with calculated fields.
For example: I want to group a list by year, then by month.
I can achieve this by going to my list settings, creating a calculated column, and then creating a formula that groups first by year, then by month.
Finally, I simply edit my Content Query Web Part, and select that new list item under Presentation > Grouping.
I hope this helps!
to make CQWP to have sub grouping we need to modify contentquerymain.xsl file which is difficult , instead of this we can use crossList data view web part which does the same job with more features. we can have 2 or more levels of sub groups