SQL Pivot table for Blank data - sql

Question

following is my Query to generate the Pivoted result:
SELECT '# of Corrective Actions open and overdue' as [Corrective Actions breakdown],
[405],
[2865],
[3142],
[405]+[2865]+[3142] as [Total]
FROM
(Select il.Locationid , ca.CorrectiveActionsid, il.locOrder, ca.isDeleted caDeleted, i.isDeleted iDeleted, i.CompanyId companyid,ca.CADateBy, ca.Status from IncidentLocation il inner join incident i on il.IncidentId = i.IncidentId
inner join CorrectiveActions ca on i.IncidentId = ca.IncidentId
) AS SourceTable
PIVOT
(
COUNT(CorrectiveActionsid)
FOR LocationId IN ([405],[2865],[3142])
) PivotTable
where locOrder = 0 and caDeleted =0 and iDeleted = 0 and companyId = 210
and CADateBy <= '2013-01-01' and [Status] = 'Open'
I was thinking for blank data the count should return o. But I am getting no result at all. Please guide me what wrong I am doing and what should I do to get zero instead of blank for all the counted values.

Answer 1

looks like your query doesn't return any row, you can fix it like this (I've not fixed other parts of query, just want to show you a workaround):
select
A.[Corrective Actions breakdown],
coalesce([405], 0) as [405],
coalesce([2865], 0) as [2865],
coalesce([3142], 0) as [3142],
coalesce([405], 0) + coalesce([2865], 0) + coalesce([3142], 0) as [Total]
from (select '# of Corrective Actions open and overdue' as [Corrective Actions breakdown]) as A
outer apply (
SELECT
[405],
[2865],
[3142]
FROM
(Select il.Locationid , ISNULL(ca.CorrectiveActionsid, 0) AS CorrectiveActionsid, il.locOrder, ca.isDeleted caDeleted, i.isDeleted iDeleted, i.CompanyId companyid,ca.CADateBy, ca.Status from IncidentLocation il inner join incident i on il.IncidentId = i.IncidentId
inner join CorrectiveActions ca on i.IncidentId = ca.IncidentId
) AS SourceTable
PIVOT
(
COUNT(CorrectiveActionsid)
FOR LocationId IN ([405],[2865],[3142])
) PivotTable
where locOrder = 0 and caDeleted =0 and iDeleted = 0 and companyId = 210
and CADateBy <= '2013-01-01' and [Status] = 'Open'
) as p

Answer 2

I would expect the count() to return 0. If it doesn't, you can try using coalesce():
coalesce([405], 0) as [405]

Answer 3

In SQL Server COUNT will ignore NULL values. That being said, use an ISNULL function on the column you are going to aggregate.
SELECT '# of Corrective Actions open and overdue' as [Corrective Actions breakdown],
[405],
[2865],
[3142],
[405]+[2865]+[3142] as [Total]
FROM
(Select il.Locationid , ISNULL(ca.CorrectiveActionsid, 0) AS CorrectiveActionsid, il.locOrder, ca.isDeleted caDeleted, i.isDeleted iDeleted, i.CompanyId companyid,ca.CADateBy, ca.Status from IncidentLocation il inner join incident i on il.IncidentId = i.IncidentId
inner join CorrectiveActions ca on i.IncidentId = ca.IncidentId
) AS SourceTable
PIVOT
(
COUNT(CorrectiveActionsid)
FOR LocationId IN ([405],[2865],[3142])
) PivotTable
where locOrder = 0 and caDeleted =0 and iDeleted = 0 and companyId = 210
and CADateBy <= '2013-01-01' and [Status] = 'Open'