video_category

5 rows where c_uid = "c_uylsl"

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Link v_uid c_uid
v_3n9af,c_uylsl v_3n9af Couple c_uylsl
v_9rb3h,c_uylsl v_9rb3h Couple c_uylsl
v_r9w9c,c_uylsl v_r9w9c Couple c_uylsl
v_t77lo,c_uylsl v_t77lo Couple c_uylsl
v_xjn6f,c_uylsl v_xjn6f Couple c_uylsl

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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);