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- SELECT V.idVideo, COUNT(H.idVideo) AS nb_fr
- FROM HISTORY H
- INNER JOIN VIDEO V ON V.idVideo = H.idVideo
- INNER JOIN USER U ON U.idUser = H.idUser
- WHERE U.nationality = 'french'
- GROUP BY H.idVideo
- ORDER BY V.idVideo;
- SELECT V.idVideo, COUNT(H.idVideo) AS nb_ge
- FROM HISTORY H
- INNER JOIN VIDEO V ON V.idVideo = H.idVideo
- INNER JOIN USER U ON U.idUser = H.idUser
- WHERE U.nationality = 'german'
- GROUP BY H.idVideo
- ORDER BY V.idVideo
- idVideo | nb_fr | nb_ge
- -----------------------
- 1 | 5 | 4
- 2 | 3 | 6
- 3 | 2 | 8
- 4 | 3 | 3
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