Want to filter SQL Server query - sql

Question

Currently I am pulling out the Facilities where the permitType is 'Hazardous waste' and the licenseStatus is 'Open', but there will be cases where the facilities will have more than one permit type suppose a facility can have two permit types
Hazardous waste (status - OPEN)
AST (OPEN)
so I should not display this facility in my output if it other permit types (Status - OPEN) apart from the 'hazardous waste', but if the other permit type has status - CLOSE then my query should output the Facility i.e if AST(Status - CLOSE) then the facility should be pulled from the database.
I wrote the following query but not sure where to include the condition.
SELECT
e.facilityID
,f.organization_core AS 'Facility Name'
,f.address_full_core AS 'Facility Address'
,a.permitNumber AS 'Permit Number'
,b.permitName AS 'Permit Name'
,a.licenseStatus AS 'Permit Status'
,c.permitType AS 'Permit Type'
FROM
tblPermits a
LEFT JOIN
dbo.tblPermit_Names b ON a.permitID = b.permitID
LEFT JOIN
dbo.tblLKP_Permit_Facilities d ON a.permitID = d.permitID
LEFT JOIN
dbo.tblPermit_Types c ON a.permitTypeID = c.permitTypeID
LEFT JOIN
dbo.tblFacility e ON d.facilityID = e.facilityID
LEFT JOIN
dbo.tblAddresses f ON e.facilityAddressID = f.addressID
WHERE
a.permitTypeID IN (SELECT permitTypeID
FROM dbo.tblPermit_Types
WHERE permitType IN ('Hazardous Waste'))
AND a.licenseStatus = 'Open'
AND isNull(a.deleted, 0) = 0

Answer 1

I think the following query implements your rules. The idea is to focus on the facility and not on all the extra stuff in the tables that you have put in. You need to aggregate by facilityid so you can apply logic to all the permits issued for each one:
SELECT f.facilityID
FROM dbo.tblFacility f join
dbo.tblLKP_Permit_Facilities pf
on pf.facilityID = f.facilityId join
tblPermits p
on pf.permitID = p.permitID join
dbo.tblPermit_Types pt
ON pt.permitTypeID = p.permitTypeID
GROUP BY f.facilityID
HAVING SUM(case when pt.permitType IN ('Hazardous Waste') and p.licenseStatus = 'Open'
then 1 else 0
end) > 0 and
SUM(case when pt.permitType NOT IN ('Hazardous Waste') and p.licenseStatus = 'Close'
then 1 else 0
end) > 0;
Each condition in the having clause is applying one of your rules.

Answer 2

I'm a little confused as to your table structure, but this is what I think you should do.
Your where statement should be id in (Select id from table where status = open and count(id) = 1 group by facility)
AND Type in ('Hazardous Waste')
The first part of the where statement will limit all ids to those that are open with only one open type per facility, the second part limits it to just hazardous waste.
If you have a facility with 10 permits, but only one is active, it will pull it into the list, but if the active permit isn't hazardous waste, it will then exclude it.
Sorry I can't give you exact code.
Also, nix as many of those outer joins as you can. Inner joins are faster, and are more likely to represent the data you want.