Consider this table: c_const

 code  |  nvalue
 --------------
 1     |  10000
 2     |  20000

and another table t_anytable

 rec_id |  s_id  | n_code
 ---------------------
 2      |  x     | 1

The goal is to have s_id be a computed column, based on this formula:

 rec_id*(select nvalue from c_const where code=ncode)

This produces an error:

Subqueries are not allowed in this context. Only scalar expressions are allowed.

How can I calculate the value for this computed column using another table's column as an input?

sql sql-server-2008 calculated-columns
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