使用SQL Server 2008插入大量记录

Question

我想我已经破解了生成随机数的方法.但是,SQL服务器中有效的循环方式是什么？我有以下SQL:

DECLARE @Random1 INT;
DECLARE @Random2 INT;
DECLARE @Random3 INT;
DECLARE @Random4 INT;
DECLARE @Random5 INT;
DECLARE @Random6 INT;

DECLARE @Upper INT;
DECLARE @Lower INT;

---- This will create a random number between 1 and 49
SET @Lower = 1 ---- The lowest random number
SET @Upper = 49 ---- The highest random number
SELECT @Random1 = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)
SELECT @Random2 = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)
SELECT @Random3 = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)
SELECT @Random4 = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)
SELECT @Random5 = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)
SELECT @Random6 = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0)
--SELECT @Random;

INSERT INTO [lotto].[dbo].[CustomerSelections]
           ([draw_date]
           ,[val1]
           ,[val2]
           ,[val3]
           ,[val4]
           ,[val5]
           ,[val6])
     VALUES
           (
           '2013-07-05'
           ,@Random1
           ,@Random2
           ,@Random3
           ,@Random4
           ,@Random5
           ,@Random6 
           )

让SQL Server运行此SQL 100,000次的最佳方法是什么？

Answer 1

在没有循环的一个语句中完成所有操作将是最有效的方法.

INSERT INTO [lotto].[dbo].[CustomerSelections]
           ([draw_date]
           ,[val1]
           ,[val2]
           ,[val3]
           ,[val4]
           ,[val5]
           ,[val6])
SELECT TOP (100000 )
           '2013-07-05',
           1 + ABS(CRYPT_GEN_RANDOM(8) % 49),
           1 + ABS(CRYPT_GEN_RANDOM(8) % 49),
           1 + ABS(CRYPT_GEN_RANDOM(8) % 49),
           1 + ABS(CRYPT_GEN_RANDOM(8) % 49),
           1 + ABS(CRYPT_GEN_RANDOM(8) % 49),
           1 + ABS(CRYPT_GEN_RANDOM(8) % 49)
FROM master..spt_values v1,
     master..spt_values v2