快速生成導入億級測試數據到sqlserver

若是採用insert into 循環一條一條插入速度比較慢

能夠先將數據插入臨時表，而後在臨時表數據量到達批量插入的行數時執行例如：目標表 (col1，col2，col3)

SELECT col1，col2，col3  into #temp FROM 目標表 WHERE 1=2 --根據目標表結構複製一個臨時表
declare @n int
set @n=1
while @n<=100000000
begin
insert  #temp(col1,col2,col3)
values ( NEWID(),
'48'+right( '00000000'+cast(@n as nvarchar(10)),8),
CAST(ABS(CHECKSUM(newID()))%CAST( cast('2003-10-01' as datetime)-cast('1968-03-02' as datetime) AS BIGINT)+CAST(cast ('1968-03-02' as datetime) AS BIGINT) AS DATETIME)+RAND() --隨機時間
)
 if @n%100001=100000  --每10萬條記錄執行一次批量插入，能夠自定義
 begin 
 insert 目標表(col1,col2,col3) select * from #temp
 truncate table #temp
 end 
set @n=@n+1
end
--drop table #temp