Filter channel entries by category with nested condition

Question

How can we filter channel entries like below:

{exp:channel:entries category="1&2&3&(5|6)"}

Is it possible to use '&' and '|' together?

Answer 1

Nested conditions isn't possible natively. Dandy Cat, a free plugin, will give you this exact functionality.

So for your example, you would do:

{exp:dandy_cat:entries categories=”(1&2&3)&(5|6)”}
    ....
{/exp:dandy_cat:entries]