ä»åã¯ãMySQLã®é«éåã®ã¡ã¢ - @luke_silvia.diaryã®æ¹æ³ã«å¾ã£ã¦ã¯ã¨ãªã®é«éåãããéã«ãMySQLã®ã¤ã³ããã¯ã¹ã«ã¤ãã¦åãã£ããã¨ãæ¸ãã¦ããã¾ãã é«éå対象ã®ã¯ã¨ãª ä»åé«éåãããã¯ã¨ãªã¯ã以ä¸ã®ãããªãã®ã SELECT users.*, students.school, workers.school FROM users LEFT JOIN students ON users.id = students.user_id LEFT JOIN workers ON users.id = workers.user_id WHERE (users.status= 1 AND ((kind = 0 AND students.school = 'test') OR (kind = 1 AND workers.school = 'test'))) ORDER BY

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