join two diff tables

hi

In the below query the Name is in Table2 and Dept is in Table1, in such case how to alert the below query

in table1 Name = table2 empname

SELECT m1.Name,
       ( SELECT left(m2.Dept,1)+ '/'
           FROMTable1 m2
          WHERE m2.Name= m1.Name
                      FOR XML PATH('') ) AS Dept_Group
  FROMTable1 m1
 GROUP BY m1.Name;