摘要: 表一 (t1): 表二 (t2): 表一转表二: selectname,sum(case subject when '语文' then score end) 语文,sum(case subject when '数学' then score end) 数学,sum(case subject when 阅读全文
posted @ 2020-07-06 16:33 George_King 阅读(100) 评论(0) 推荐(0) 编辑