error : Only constants, constant expressions, or variables allowed here.

hi all,
when I try to do the following insert for the table test

create table test (outputs character(10), chk integer)

insert into test values('a',((select count(*) from test where outputs='a')+1))

I am getting the error
The name 'outputs' is illegal in this context. Only constants, constant expressions, or variables allowed here. Column names are illegal.

when i tried the same in DB2 it's working fine. is there anyerror in my syntax or this kind of function not allowed in SQL Server.

regards
MelbUse a SELECT instead of the VALUES clause.

-PatP