Generelt @> er operatøren "indeholder".
Den er defineret for flere datatyper.
- arrays:http://www.postgresql.org/ docs/current/static/functions-array.html
- intervaltyper:http://www.postgresql.org /docs/current/static/functions-range.html
- geometriske typer:http://www.postgresql.org /docs/current/static/functions-geometry.html
- JSON (og JSONB):http://www. postgresql.org/docs/current/static/functions-json.html