Editing Help:Searching (section)

==== <code>deepcategory:</code> ====
{{anchor|deepcategory}}
{{shortcut|H:DEEPCAT}}

Also <code>deepcat:</code>, this allows you to search in a category and all its subcategories. The depth of the tree is currently limited to 5 levels, and the overall number of categories is limited to 1000.

Examples:

{| class="wikitable"
! Query
! Description
|-
| {{kbd|{{search link|deepcat:"Musicals by topic"}}}}
| All musicals of any topic. (Finds articles that are in [[:Category:Musicals by topic]] or any of its subcategories.)
|-
| {{kbd|{{search link|Berlin deepcat:German_chemists}}}}
| Starting with the articles listed at [[:Category: German chemists]], only the ones that have the word {{samp|Berlin}} in their text.
|-
| {{kbd|{{search link|deepcat:"Suspension bridges in the United States" deepcat:"Bridges in New York City"}}}}
| Articles that are [[WP:CI|common to both categories]] – the suspension bridges in New York City. This will work since all NYC bridges are categorized in subcategories, and <code>incategory:</code> doesn't search in subcategories but <code>deepcat:</code> does.
|-
| {{kbd|{{search link|deepcat:"Suspension bridges in New York City" deepcat:"Bridges in Brooklyn"}}}}
| Suspension bridges of Brooklyn.
|-
| {{kbd|{{search link|"feral cat" -deepcat:"Category:Cats in the United Kingdom"}}}}
| Articles that contain the phrase {{samp|feral cat}}, but not listed in [[:Category:Cats in the United Kingdom]] or its subcategories.
|}