源表
Id, Name, hits
1 A 10
1 A 20
1 A 30
2 A 10
目标表
Id, Name, hits
1 A NULL
合并后
Id, Name, hits
1 A 60
2 A 10
以上可能吗?使用合并语句?
最佳答案
尝试以下
MERGE targetTable AS [pi]
USING (
SELECT id,name,sum(hits) as hits from sourcetable
GROUP BY id,name
) AS src (id,name,hits) ON src.id= [pi].id and scr.name=pi.name
WHEN MATCHED
THEN UPDATE SET [pi].hits= src.hits
WHEN NOT MATCHED
THEN INSERT values (src.id, src.name,hits)
关于sql - 合并 TVP + 更新记录时对列求和,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52889387/