mysql列转行

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
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原文地址：https://www.cnblogs.com/baby123/p/5110622.html