Question

select eid, pid,
case when i_flag='Y' and i_deleted='Y' then 'Y' else 'N' end
from test_emp
where desig in ('it','hr','account')
group by eid, pid,
case when i_flag='Y' and i_deleted='Y' then 'Y' else 'N' end;

现在我想将列i_status更新为＆＃39; Y＆＃39;当i_flag =＆＃39; Y＆＃39;和i_deleted =＆＃39; Y＆＃39;然后＆＃39; Y＆＃39;别的＆＃39; N＆＃39;结束来自test_emp desig in（＆＃39; it＆＃39;，＆＃39; hr＆＃39;，＆＃39; account＆＃39;）小组，开发，pid，当i_flag =＆＃39; Y＆＃39;和i_deleted =＆＃39; Y＆＃39;然后＆＃39; Y＆＃39;别的＆＃39; N＆＃39;结束;

我的更新stmt无效： -

update t1
set t1.i_status=t2.result
(case when i_flag='Y' and i_deleted='Y' then 'Y' else 'N' end; 
from test_emp t1 ,test_emp t2
inner join t on t1.eid=t2.eid
where t1.desig in ('it','hr','account')
group by t1.eid, t1.pid,
case when t1.i_flag='Y' and t1.i_deleted='Y' then 'Y' else 'N' end);

Answer 1

不知道你想做什么，但这是我最好的猜测。这当然是100％未经测试，因为我们没有表格或数据可供使用。我会建议在发布您的下一个问题之前查看这篇文章。 http://spaghettidba.com/2015/04/24/how-to-post-a-t-sql-question-on-a-public-forum/

update e
set i_status = case when i_flag='Y' and i_deleted='Y' then 'Y' else 'N' end
from test_emp e
where desig in ('it','hr','account')

更新语句在sql server中不起作用

1 个答案: