MRQL

Aliases: Map-Reduce Query Language

Provenance: commit e3ece3768e · authored 2026-03-05T11:13:52+01:00 · agent claude-code · model claude-sonnet-4-6

1 source · not in taxonomy (canonical name didn't match any upstream)

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

-- Word count query in MRQL (Map-Reduce Query Language)
-- Counts word frequencies in a text corpus

store result := select (word: w, count: count(x))
               from line in load("data.txt","text_file","")
               , w in tokens(line,r"[\W]+")
               group by w;

dump(result);