SELECT w.slug
FROM whisky w
LEFT JOIN whisky_words ww
ON (w._id = ww.whisky_id)
WHERE ww.word = 'glenfiddich'
name: "Glenfiddich 12",
slug: "glenfiddich-12",
words: [
"glenfiddich",
"12"
],
db.whisky.find(
{ words: 'glenfiddich' },
{ slug: 1 }
).pretty();