average

问题 I am trying to join two tables: songs id | song | artist ---|------|------- 1 | foo | bar 2 | fuu | bor 3 | fyy | bir score id | score ---|------ 1 | 2 2 | 4 3 | 8 2 | 6 3 | 2 using this SQL command: SELECT songs.id, songs.song, songs.artist, score.score FROM songs LEFT JOIN score ON score.id=songs.id ORDER BY songs.id, score DESC What I get back is duplicates of the same song with multiple scores, I would like the score to be averaged. result id | song | artist | score ---|------|--------|--

问题 I am trying to join two tables: songs id | song | artist ---|------|------- 1 | foo | bar 2 | fuu | bor 3 | fyy | bir score id | score ---|------ 1 | 2 2 | 4 3 | 8 2 | 6 3 | 2 using this SQL command: SELECT songs.id, songs.song, songs.artist, score.score FROM songs LEFT JOIN score ON score.id=songs.id ORDER BY songs.id, score DESC What I get back is duplicates of the same song with multiple scores, I would like the score to be averaged. result id | song | artist | score ---|------|--------|--

来源： https://stackoverflow.com/questions/44814435/calculate-average-daily-value-from-large-data-set-with-r-standard-format-date-ti

来源： https://stackoverflow.com/questions/44814435/calculate-average-daily-value-from-large-data-set-with-r-standard-format-date-ti

来源： https://stackoverflow.com/questions/41933232/python-average-every-n-elements-in-a-list

来源： https://stackoverflow.com/questions/41933232/python-average-every-n-elements-in-a-list

来源： https://stackoverflow.com/questions/41933232/python-average-every-n-elements-in-a-list

来源： https://stackoverflow.com/questions/53771596/how-to-find-average-salary-for-each-job-role-from-a-file-in-python

来源： https://stackoverflow.com/questions/53771596/how-to-find-average-salary-for-each-job-role-from-a-file-in-python

来源： https://stackoverflow.com/questions/64141919/student-with-greater-average-grades-by-major