using exists instead of join with distinct

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Alexander Strizhakov 2021-02-23 15:14:37 +03:00
parent b1f9fa5245
commit 48fb2d0d0b
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@ -109,14 +109,21 @@ defmodule Pleroma.User.Query do
end end
defp compose_query({:tags, tags}, query) when is_list(tags) and length(tags) > 0 do defp compose_query({:tags, tags}, query) when is_list(tags) and length(tags) > 0 do
users_with_tags_query = from(u in query,
from(u in User, where:
join: t in assoc(u, :tags), fragment(
where: t.name in ^tags, """
distinct: u EXISTS (
SELECT 1 FROM tags t
JOIN users_tags ut ON ut.tag_id = t.id AND ut.user_id = ?
WHERE t.name = ANY(?)
LIMIT 1
)
""",
u.id,
^tags
)
) )
from(u in query, join: ut in subquery(users_with_tags_query), on: ut.id == u.id)
end end
defp compose_query({:is_admin, bool}, query) do defp compose_query({:is_admin, bool}, query) do