Using

Making content available to search

https://www.semantic-mediawiki.org/wiki/Help:In-text_annotation details In text annotations, things like

[[Is capital of::Germany]]

If I want to do it quietly, it'll be thus:

{{#set:
 Has population=3,396,990
 |Has country=Germany
}}

Searching

The search page for structured queries is Special:Ask. More here: https://www.semantic-mediawiki.org/wiki/Help:Semantic_search

[[:+]] limits to main namespace. (No "Property:*" pages).

Page names

[[Brazil||France||User:John Doe]]
[[~John*]]

Based on values

Selecting pages: https://www.semantic-mediawiki.org/wiki/Help:Selecting_pages

[[Category:Actor]] 
[[born in::Boston]] 
[[height::180cm]]

Logic

A space is AND.

* || is for disjuncting inside a query (values, property names)
*  OR  is for parts of a query.

For example: [[Category:Musical actor]] OR [[Category:Theatre actor]] == [[Category:Musical actor||Theatre actor]]

Wildcards

[[born in::+]]

returns all pages that have any value for the property «born in».

Comparators

Placed after :: in property conditions.

• >> and <<: "greater than" and "less than"
• > and <: "greater than or equal" and "less than or equal" by default, but "greater than" and "less than" if $smwStrictComparators = true;
• ≥ and ≤: "greater than or equal" and "less than or equal"
• !: "not" ("unequal")
• ~: «like» comparison for strings
• !~: «not like» comparison for strings

Like, not like

In a like condition, one uses '*' wildcards to match any sequence of characters and '?' to match any single character. For example, one could ask [[Address::~*Park Place*]] to select addresses containing the string "Park Place", or [[Honorific::~M?.]] to select both "Mr." and "Ms.".

Subqueries

[[Category:Actor]] [[born in::<q>[[Category:City]] [[located in::Italy]]</q>]]

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