MYSQL|count()函數使用條件分別統計

需求 SQL語句web select class1_id ,class1_name ,class2_id ,class2_name ,run_id ,count(run_id) as count_all#提交數 ,count(run_ok>0 or null) as count_done#處理數 ,count(run_ok=1 or null) as count1#合格數 ,count(run_o

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