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return 0

return 0


I am trying to return all portfolios, even if they don not have any that have NEWBIZ (return 0 with portfolio). I tried IFNULL. Not sure how to go about it. Any advice?
select ifnull(count(*),0) ,d.portfolio from dbase d, portfolios pf where statusname='NEWBIZ'
and pf.portfolio=d.portfolio
group by pf.portfolio order by pf.placementdate;

RE: return 0


select d.portfolio,
sum(case when pf.portfolio is null then 1 else 0 end) PFCount
from dbase d
left outer join portfolios pf
on d.portfolio=pf.portfolio
and pf.statusname='NEWBIZ'
group by d.portfolio
order by pf.placementdate;


RE: return 0

COUNT() will return 0 if there weren't any matches in a LEFT OUTER JOIN (provided you count a column from the right table)

also, in a GROUP BY query, in order to sort on a column, that column must be in the SELECT list -- yes mysql will execute it regardless, but it might give the wrong data


SELECT d.portfolio
     , MAX(pf.placementdate) AS maxdate
     , COUNT(pf.portfolio) AS PFCount
 FROM dbase AS d
  JOIN portfolios AS pf 
    ON pf.portfolio = d.portfolio 
   AND pf.statusname = 'NEWBIZ'
    BY d.portfolio 
    BY maxdate; 

note also that dbases which are missing portfolios will have NULL as their placement date, so these will sort first

r937.com | rudy.ca
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RE: return 0

Thanks! Works perfect

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