In this example the size of the table of literals is unlimited. However aditional coding is needed tu use variable names i.e. A, B, C, etc. A little fooling around with this thing and it might serve the most elementary uses.

DECLARE @ExprCollection Table(expr VARCHAR(100) )

INSERT INTO @ExprCollection(expr)

SELECT '2+1'

UNION ALL

SELECT '5*2'

UNION ALL

SELECT '6/3'

drop table #ExpValueTable

CREATE TABLE #ExpValueTable ([value] decimal(18,4),[Id_Exp] [VARCHAR](100) PRIMARY KEY)

declare ExprCursor cursor

for

select * from @ExprCollection

declare @Expr as varchar(100), @SQL varchar(max)

open ExprCursor

fetch next from ExprCursor into @Expr

while @@Fetch_Status = 0

BEGIN

set @SQL = ' INSERT INTO #ExpValueTable ([value],[Id_Exp]) SELECT ' + @expr + ' AS ExpValue,''' + @expr +''' As Exp'

fetch next from ExprCursor into @Expr

exec (@SQL)

END

close ExprCursor

deallocate ExprCursor

select * from #ExpValueTable