video_category

3 rows where v_uid = "v_bzx4c"

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Link v_uid c_uid
v_bzx4c,c_nagwk v_bzx4c Image Video c_nagwk
v_bzx4c,c_qu1cm v_bzx4c Solowork c_qu1cm
v_bzx4c,c_r2zdf v_bzx4c Entertainer c_r2zdf

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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);