要得到
SELECT name,
SUM(CASE course WHEN '语文' THEN score END ) AS '语文',
SUM(CASE course WHEN '数学' THEN score END ) AS '数学',
SUM(CASE course WHEN '英语' THEN score END ) AS '英语'
FROM grade GROUP BY name
2021-09-09 23:51:30
要得到
SELECT name,
SUM(CASE course WHEN '语文' THEN score END ) AS '语文',
SUM(CASE course WHEN '数学' THEN score END ) AS '数学',
SUM(CASE course WHEN '英语' THEN score END ) AS '英语'
FROM grade GROUP BY name