I have a very large view which uses case statements. In each case are
subqueries which preforms a sort of validation. However depending on if the
result is not zero it will do the same subquery over again;
CASE
WHEN (
SELECT Sum(Total)
FROM Schema.Hours a
WHERE a.ID = Hours.ID
AND Rank = 1) > 0
THEN (
SELECT Sum(Total)
FROM Schema.Hours a
WHERE a.ID = Hours.ID
AND Rank = 1)
ELSE 0
END RankGroup
If I use a decode function how would I be able to compare the query's value
being greater than zero, than putting the value as the result? As of right now
I compare the query to check if it's equal to zero, which is not good in my
opinion. This is what I have so far:
DECODE(
(SELECT Sum(Total)
FROM Schema.Hours a
WHERE a.ID = Hours.ID
AND Rank = 1),
0, 0, ??????) AS RankGroup
Any help or suggestions are appreciated. Thanks!
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