SQL comma separated values grouped in query [duplicate] - sql

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Concat groups in SQL Server [duplicate]
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SQL in (#Variable) query
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Closed 9 years ago.
I am using SQL Server 2008 and inherited a database that did not use many to many. They instead used a comma-separated column. I have found how to link the comma-separated values to the name of the program. But I need a list of the programs and the offices they belong to, like this
OFFICE table:
ID Name
--- ------
1 HQ
2 PA
3 CEO
PRG table:
ID Name Office Affected
-- ---- ---------------
A PRG1 1,3
B PRG2 2
C PRG3 2,3
D PRG4 1,2
Output that I need :
Name Programs
---- ---------
HQ PRG1, PRG4
PA PRG2, PRG3, PRG4
CEO PRG1, PRG3

Answer 1

You can manage to do this. However, because storing lists in strings is a bad idea, I don't want to compound that by putting them back in a comma-delimited list. Instead, the following query produces the data in a more normalized form, with one row per office name and program:
select o.name, p.name as program_name
from prg p join
office o
on ','+p.OfficeAffected+',' like '%,'+cast(o.id as varchar(255)) + ',%';