How to combine values in SQL stored procedure - sql

Question

I have a stored procedure
SELECT P.Name,P.Description,
PP.Attribute,PD.Value
FROM admin.Profiles P
LEFT JOIN admin.ProfilePreferenceMap PPM on P.ProfileID=PPM.ProfileID
LEFT JOIN admin.ProfilePrefDtl PD on PD.ProfilePrefDtlID=PPM.PreferenceID
LEFT JOIN admin.ProfilePref PP on PP.ProfilePrefID=PD.ProfilePrefID
WHERE P.Name='Profile1'
which returns the rows like
Name Description Attribute Value
Profile1 Profile 1 description E EV
Profile1 Profile 1 description S SV
I would like to get the result as
Name Description Attribute Value
Profile1 Profile 1 description E,S EV,SV
My purpose is to convert this values to JSON data like -
[{"Name":"Profile1","Description":"Profile 1 description","Attribute":["E", "S"],"Value":["EV", "SV"]}]

Answer 1

You should emulate GROUP_CONCAT() which exists in MySql
SQLFiddle demo
with t as
(
SELECT P.Name,P.Description,
PP.Attribute,PD.Value
FROM admin.Profiles P
LEFT JOIN admin.ProfilePreferenceMap PPM on P.ProfileID=PPM.ProfileID
LEFT JOIN admin.ProfilePrefDtl PD on PD.ProfilePrefDtlID=PPM.PreferenceID
LEFT JOIN admin.ProfilePref PP on PP.ProfilePrefID=PD.ProfilePrefID
WHERE P.Name='Profile1'
)
select
Name,Description,
stuff((select ', ' + Attribute
from t t2 where t1.NAme = t2.NAme and t1.Description = t2.Description
for xml path('')),
1,2,'') [Attributes],
stuff((select ', ' + Value
from t t2 where t1.NAme = t2.NAme and t1.Description = t2.Description
for xml path('')),
1,2,'') [Values]
from t t1
group by Name,Description

Answer 2

You could use group by to group by unique name or description column but i'm not sure there is a easy way to get the comma separated value, made of values across separate rows, unless you did something with Temp tables and CONCAT() possibly?
If grouping is ok try this:
SELECT P.Name,P.Description,
PP.Attribute,PD.Value
FROM admin.Profiles P
LEFT JOIN admin.ProfilePreferenceMap PPM on P.ProfileID=PPM.ProfileID
LEFT JOIN admin.ProfilePrefDtl PD on PD.ProfilePrefDtlID=PPM.PreferenceID
LEFT JOIN admin.ProfilePref PP on PP.ProfilePrefID=PD.ProfilePrefID
WHERE P.Name='Profile1'
GROUP BY P.Name
However, grouping like this will only show the first row (based on sort) of your Attribute and Value columns howe