T-SQL – 1 million records in 1 second

I thought this is worth noting. This is the way to generate 1 million records within 1 second in SQL Server 2005. I'll have the code pasted here so that I can have a reference the next time I need to use it. As Namwar Rizvi said, this code is proposed in SQL Server 2005 TSQL Querying by Microsoft press.

--Declare a variable to hold the
--count of rows to be generated

Declare @p_NumberOfRows Bigint

--We need 1 million rows

Select @p_NumberOfRows=100000;

With Base As
(
Select 1 as n
Union All
Select n+1 From Base Where n < Ceiling(SQRT(@p_NumberOfRows))
),
Expand As
(
Select 1 as C
From Base as B1, Base as B2
),
Nums As
(
Select Row_Number() OVER(ORDER BY C) As n
From Expand
)
Select n from Nums Where n<=@p_NumberOfRows

--Remove Maximum Recursion level constraint

OPTION (MaxRecursion 0);

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