Query for comma-separated ids to comma-separated values

Question

I have 2 tables

Departments

ID  Dept
---------
1   HR
2   Accts
3   IT

Employee

I         


        

Answer 1

You can also use a recursive CTE to split the data and then use FOR XML PATH to concatenate the rows into a single row:

;with cte (id, name, deptid, depts) as
(
  select id, name,
    cast(left(depts, charindex(',',depts+',')-1) as varchar(50)) deptid,
         stuff(depts, 1, charindex(',',depts+','), '') depts
  from employee
  union all
  select id, name,
    cast(left(depts, charindex(',',depts+',')-1) as varchar(50)) deptid,
    stuff(depts, 1, charindex(',',depts+','), '') depts
  from cte
  where depts > ''
) 
select e.id, e.name,
  stuff((
         select distinct ', '+ d.dept
         from cte c
         inner join departments d
            on c.deptid = d.id
         where e.id = c.id
         for XML path('')),1,1,'') Depts
from employee e

See SQL Fiddle with Demo

Result:

| ID |     NAME |          DEPTS |
----------------------------------
|  1 |    Kevin |      Accts, HR |
|  2 | Michelle |             HR |
|  3 |     Troy |         HR, IT |
|  4 |   Rheesa |  Accts, HR, IT |