video_label

4 rows where l_uid = "l_3c9yf"

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Link v_uid l_uid
v_97y7w,l_3c9yf v_97y7w Mellow Moon l_3c9yf
v_ctmr7,l_3c9yf v_ctmr7 Mellow Moon l_3c9yf
v_uyg7h,l_3c9yf v_uyg7h Mellow Moon l_3c9yf
v_xoutl,l_3c9yf v_xoutl Mellow Moon l_3c9yf

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CREATE TABLE video_label (
  v_uid TEXT NOT NULL REFERENCES videos(uid) ON DELETE CASCADE,
  l_uid TEXT NOT NULL REFERENCES labels(uid) ON DELETE CASCADE,
  PRIMARY KEY (v_uid, l_uid)
);
CREATE INDEX idx_video_label_l ON video_label(l_uid);