Question

Possible Duplicate:
SELECT FROM stored procedure?

How should I include a stored procedure in a T-SQL syntax?

select * from CITY_TABLE C where 
    COUNT_PEOPLE_PROCEDURE(C.ID) > 3

Answer 1

You cannot include stored procedure into query like this.

Instead, you can make scalar function

create function COUNT_PEOPLE_FUNCTION
(
    @ID int
)
returns int
as
begin
    declare @Result int

    <... your code here ...>

    return @Result
end

and then

select * from CITY_TABLE C where COUNT_PEOPLE_FUNCTION(C.ID) > 3

But, actually, it may slow your query, because scalar function will be called for each row independently.