Counting the number of rows returned by stored procedure

Question

How do I count the number of rows a stored procedure would return the fastest way. Stored procedure returns rows around 100K to 1M records.

Answer 1

I have a similar task with a restriction that I must not alter the SP to get the count. Hence:

sp_configure 'show advanced options', 1;  
reconfigure;
go

sp_configure 'ad hoc distributed queries', 1;  
reconfigure;  
go

select count(*) from 
    openrowset('SQLOLEDB','Data Source=localhost;Trusted_Connection=yes;
    Integrated Security=SSPI','exec DBNAME..SPName')