SQL Query

Is it possible to also write the following query into a CASE statement?

select arcf_cust_n, ' ', arcf_name
from ihih, arcf
where RSIH_CUST_N = arcf_cust_n and arcf_parent_cust_n = ' '
union
select arcf_parent_cust_n, arcf_cust_n,
(select b.arcf_name as parent_name
from arcf b
where b.arcf_cust_n = childcust.arcf_parent_cust_n) name
from ihih, arcf childcust
where RSIH_CUST_N = arcf_cust_n and arcf_parent_cust_n <> ' '
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isamesAsked:
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Scott PletcherSenior DBACommented:
Yes, at least I believe this does it:

SELECT
    CASE WHEN a.arcf_parent_cust_n = ' ' THEN a.arcf_cust_n ELSE a.arcf_parent_cust_n END AS arcf_cust_n,
    CASE WHEN a.arcf_parent_cust_n = ' ' THEN ' ' ELSE a.arcf_cust_n END AS [<label>],
    CASE WHEN a.arcf_parent_cust_n = ' ' THEN a.arcf_name ELSE
        (SELECT a_parent.arcf_name
         FROM arcf a_parent
         WHERE a_parent.arcf_cust_n = a.arcf_parent_cust_n) END AS arcf_name
FROM arcf a
INNER JOIN ihih i ON
    i.RSIH_CUST_N = a.arcf_cust_n
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isamesAuthor Commented:
Can you explain this for me?

Thanks!!!
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isamesAuthor Commented:
Thanks for your help.
0
Scott PletcherSenior DBACommented:
Sorry, I've been SWAMPED at work lately.

I just took the columns that got listed in the first query and had them be shown when the arcf_parent_cust_n column is = ' ', and the column values in the second query to be listed if it wasn't.
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Microsoft SQL Server

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