对于MYSQL,我正在使用以下查询:
UPDATE CustomerDetails_COPY SET Category_ID = 10 WHERE Category_ID = 2
没关系,但我想向其投放15个以上的广告SET/WHERE:
SET/WHERE
UPDATE CustomerDetails_COPY SET Category_ID = 9 WHERE Category_ID = 3 SET Category_ID = 12 WHERE Category_ID = 4 SET Category_ID = 11 WHERE Category_ID = 5 .....
我要如何添加呢?
编辑:
根据猎人的建议:
UPDATE CustomerDetails_COPY SET Category_ID = CASE Category_ID WHEN 2 THEN 10 WHEN 3 THEN 9 WHEN 4 THEN 12 WHEN 5 THEN 11 END WHERE Category_ID IN (2,3,4,5)
这很棒!谢谢
这样的事情应该为您工作:
另外,如Simon所建议的,您可以这样做来避免输入两次值:
UPDATE CustomerDetails_COPY SET Category_ID = CASE Category_ID WHEN 2 THEN 10 WHEN 3 THEN 9 WHEN 4 THEN 12 WHEN 5 THEN 11 ELSE Category_ID END
资料来源:http : //www.karlrixon.co.uk/writing/update-multiple-rows-with-different-values-and- a-single-sql-query/