video_category

3 rows where v_uid = "v_hm4go"

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Link v_uid c_uid
v_hm4go,c_0951h v_hm4go Hi-Def c_0951h
v_hm4go,c_qp8vo v_hm4go Picking Up Girls c_qp8vo
v_hm4go,c_uhc9y v_hm4go Nymphomaniac c_uhc9y

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CREATE TABLE video_category (
  v_uid TEXT NOT NULL REFERENCES videos(uid)     ON DELETE CASCADE,
  c_uid TEXT NOT NULL REFERENCES categories(uid) ON DELETE CASCADE,
  PRIMARY KEY (v_uid, c_uid)
);
CREATE INDEX idx_video_category_c ON video_category(c_uid);