how to use soundex in sql..?

select *  from Tbl_STP st
join Tbl_STP_Details std on std.N_Srno=st.N_Srno
join Tbl_Sub_Area_Mst sub on sub.C_Code=std.C_Subarea_code_to
join up u on u.[fieldforce_name]=st.C_FS_Code
and SOUNDEX (u.territory)=SOUNDEX(sub.C_Name)
join Tbl_FS_Mst fs on fs.C_Code=u.[fieldforce_name]
and fs.C_Area_Code=std.C_Area_Code
where u.territory not like %sa0%