how to get name from another table with matching id in another table?

Question

I am using sql server 2008 r2 with php in my website. I have 2 tables.

1 is for employees.

(int)      (nvarchar)   (nvarchar)

id         name        type
 1         john         2
 2         peter        1
 3         leah         2
 4         frank        1
 5         tang         3

2 is for work

(int)      (nvarchar)   (nvarchar)

workid      name        employees
  1         task1       1,3
  2         task2       2,3
  3         task3       1,3,4
  4         task4         2

I want to make query which give me work description with employee name where type < 3.

Means i want to get result like this.

workid       name       employee
  1          task1      john, leah
  2          task2      peter, leah
  3          task3      john,leah,frank

like wise

so how can i achieve this result with sql query ?

I can not change in table schema.

i tried to use with case when statement but its not working.

Please help me to get this working..

Answer 1

The content of this doesn't totally answers the question but it will suggest on how you can properly normalize the table in order for theproblem to be simplified.

This is a Many-to-Many Relationship.

Employees
- ID (Primary Key)
- Name
- Type

Task
- ID (Primary Key)
- Name

Work
- EmployeeID (Foreign Key)
- TaskID (Foreign Key)

EMPLOYEE TABLE

id         name        type
 1         john         2
 2         peter        1
 3         leah         2
 4         frank        1
 5         tang         3

TASK TABLE

 id         name        
  1         task1       
  2         task2       
  3         task3       
  4         task4  

WORK TABLE

TaskID  EmployeeID
1           1
1           3
2           2
2           4
3           1
3           2
3           3
4           4

Query,

SELECT  t.ID, t.Name,
        STUFF(
        (SELECT ',' + b.Name
        FROM    Work a
                INNER JOIN Employee b
                    ON a.EmployeeID = b.ID
        WHERE   a.TaskID = t.ID 
        FOR XML PATH (''))
        , 1, 1, '')  AS NamesList
FROM    Task t
-- WHERE    ..... -- add additional conditions...
GROUP   BY t.ID, t.Name

• SQLFiddle Demo