video_category

3 rows where v_uid = "v_b1luw"

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Link v_uid c_uid
v_b1luw,c_1iv9b v_b1luw Affair c_1iv9b
v_b1luw,c_g94me v_b1luw Cuckold c_g94me
v_b1luw,c_s5lxs v_b1luw Married Woman c_s5lxs

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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);