Question

In my query I have the following condition

left Join Table2 on Table2.Id = Table1.Id and Table2.status in  ('Close', 'Open')

And the above condition gives me 2 extra rows because of the left join. I noticed that if I have only either Close or Open in the condition it returns the correct number of rows.

To fix that I was trying to write something like this

And  Table2.status = (Case Table2.status
                WHEN 'Open' Then 'Open'
                When 'Close' Then 'Close'   
                 End ) 

But this still returns 2 extra rows. Any suggestions on how to fix this??

Answer 1

You could do something like this:

select *
from table1
    left join 
    (
         select id from table2 
         where status in ('open', 'close')
         group by id

    ) as table2
        on table1.id = table2.id

This seems pretty hacky, but I cannot seem to come up with something better at the moment. Otherwise, you could use a DISTINCT

select DISTINCT table1.*, table2.stuff
FROM Table1
    LEFT JOIN Table2
        on Table2.Id = Table1.Id and Table2.status in  ('Close', 'Open')