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SQL SERVER 快速插入千万条数据

2016-03-22 16:47 447 查看

1. 正常插入：插入非常慢。

declare @count int = 10000000, @index int = 0
begin tran
while(@index < @count)
begin
insert into OrderTest(ID) values
(ROUND(RAND() * 10000000, 0))
set @index = @index + 1
end
commit

2.优化插入：插入速度明显提升。

declare @count int = 10000000, @index int = 0
begin tran
while(@index < @count)
begin
insert into OrderTest(ID) values
--1
(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--2
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--3
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--4
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--5
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--6
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--7
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--8
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--9
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
--10
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
,(ROUND(RAND() * 100000000, 0))
set @index = @index + 100
end
commit

3.总结：一条语句可插入多条数据，以此来加快插入速度。具体原理，待大神们解释。

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