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 An item with the same key has already been added.

Author  Topic 

Starting Member

25 Posts

Posted - 2014-12-19 : 10:11:22
When I added a dataset I receive this error "An item with the same key has already been added". After research online I understand it is due to me having the same column. I read that the fix is to either rename the column or omit it, but I need both status because they are different for both tables so I aliased them to accomplish this.

I am unable to rename the column name because this is a vendor database and I can't omit them because I need to pull the status. Any ideas or work arounds?


select a.field, s.status_name, s1.status_name
from table1 a join table2 b on =
join status_config s on s.status_id = a.status
join status_config s1 on s1.status_id = b.status

Master Smack Fu Yak Hacker

2780 Posts

Posted - 2014-12-19 : 11:18:14
Alias the columns like this:

select a.field, s.status_name as s_stats_name, s1.status_name as s1_status_name
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