Changing SQL Stored Procedure for multiple search results - sql

Question

I have some inherited code I need to modify in order to accommodate multiple #ParentFolderID parameter. At present, one ID is passed in. However I will now need to account for several ID's being passed in and returning results from each. Below is the current code. I'm not quite sure what exactly where I would start.
declare #Values xml
declare #ValueAttributeID int
declare #YearAttributeID int
declare #CategoryID int
declare #year int
declare #ParentFolderID int
declare #DealerAttributeID int
set #ParentFolderID = 10646615
set #CategoryID = 10646175
set #YearAttributeID = 3
set #ValueAttributeID = 2
set #year = 2014
set #Values = '<values><value id=''1000104'' /></values>'
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
with Parents
(
dataid
)
as
(
select #ParentFolderID
Union
select child.dataid
from DTree parent (NOLOCK)
inner join DTree child (NOLOCK)
on parent.dataid = child.parentid
where parent.dataid = #ParentFolderID
and child.subtype = 0
)
select doc.name as '#name',
doc.dataId as '#id',
(
select allAtts.AttrID as '#id',
case when ((allAtts.ValInt is null) and (allAtts.ValStr is null))
then cast(allAtts.ValDate as nvarchar(255))
when (allAtts.ValInt is null and allAtts.ValDate is null)
then cast(allAtts.ValStr as nvarchar(255))
when (allAtts.ValDate is null and allAtts.ValStr is null)
then cast(allAtts.ValInt as nvarchar(255))
end as '#val'
from LLAttrData allAtts (NOLOCK)
where allAtts.id = doc.dataid
for xml path('attribute'), TYPE
)
from DTree category (NOLOCK)
inner join LLAttrData value (NOLOCK)
on category.dataid = value.defid
--Changes per environment (value attribute)
and value.AttrID = #ValueAttributeID
--Check for values
inner join #Values.nodes('//value') as A(att)
on A.att.value('#id', 'nvarchar(255)') = value.ValStr
--Changes per environment (year attribute)
inner join LLAttrData y (NOLOCK)
on category.dataid = y.defid
--Changes per environment (year attribute)
and y.AttrID = #YearAttributeID
--Check for year
and year(y.valDate) = #year
inner join DTree doc (NOLOCK)
on value.id = doc.dataid
and y.id = doc.dataid
inner join Parents parent
on parent.dataid = doc.parentid
--Must be associated to the category
where category.dataid = #CategoryID -- This is the hard coded category ID
order by doc.dataid --, allAtts.AttrID
FOR XML PATH('document'), Root('documents')`