-- 方法一 select d.name 姓名, sum(decode(d.course_name, '语文', d.course_score, '')) 语文, sum(decode(d.course_name, '数学', d.course_score, '')) 数学, sum(decode(d.course_name, '化学', d.course_score, '')) 化学, sum(decode(d.course_name, '物理', d.course_score, '')) 物理, sum(decode(d.course_name, '英语', d.course_score, '')) 英语 from t_sc_demo2 d group by d.name; -- 方法二 select d.name 姓名, sum(case course_name when '语文' then course_score else 0 end) 语文, sum(case course_name when '数学' then course_score else 0 end) 数学, sum(case course_name when '化学' then course_score else 0 end) 化学, sum(case course_name when '物理' then course_score else 0 end) 物理, sum(case course_name when '英语' then course_score else 0 end) 英语 from t_sc_demo2 d group by d.name;
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