Provide the name of artists who released at least two bootlegs in 2016.
at least two bootlegs refer to COUNT(releaseType = 'bootleg')≥ 2; groupYear = 2016;
SELECT artist FROM torrents WHERE groupYear = 2016 AND releaseType LIKE 'bootleg' GROUP BY artist HAVING COUNT(releaseType) > 2
CREATE TABLE IF NOT EXISTS "torrents"
(
    groupName     TEXT,
    totalSnatched INTEGER,
    artist        TEXT,
    groupYear     INTEGER,
    releaseType   TEXT,
    groupId       INTEGER,
    id            INTEGER
        constraint torrents_pk
            primary key
);
CREATE TABLE IF NOT EXISTS "tags"
(
    "index" INTEGER
        constraint tags_pk
            primary key,
    id      INTEGER
        constraint tags_torrents_id_fk
            references torrents,
    tag     TEXT
);
CREATE INDEX ix_tags_index
    on tags ("index");
