sql server 批量插入數據demo

測試表結構如下：

CREATE TABLE [dbo].[tblPhoneNum](
 [id] [bigint] IDENTITY(1,1) NOT NULL,
 [PhoneNum] [nvarchar](50) NOT NULL,
 [name] [nvarchar](50) NOT NULL,
 [source] [nvarchar](50) NULL,
 [CreateDate] [datetime] NOT NULL,
 [CreateUser] [nvarchar](50) NOT NULL,
 [UpdateDate] [datetime] NOT NULL,
 [UpdateUser] [nvarchar](50) NOT NULL
) ON [PRIMARY]
GO
 

方案一

每1000條數據執行一次insert 操作。執行效率，工作電腦環境測試，一秒鐘一千條。
print 'begin time' + cast(getdate() as nvarchar)

 

declare @i as bigint
set @i = 1

 

declare @t as int
set @t = 1

 

declare @strInsert as nvarchar(max)
declare @sql as nvarchar(max)

 

set @strInsert =
'insert into
tblPhoneNum
(
 PhoneNum
 ,name
 ,source
 ,CreateDate
 ,CreateUser
 ,UpdateDate
 ,UpdateUser
)
values'

 

while(@i<=15077000)
--while(@i<=100)
begin
 
 while (@t <=1000)
 begin
  if @t = 1
  begin
   set @sql =
   '(
     right(REPLICATE(''0'',11) + cast(' + cast(@i as nvarchar) + ' as varchar),11)
    ,''username'' + right(REPLICATE(''0'',11) + cast(' + cast(@i as nvarchar) + ' as varchar),11)
    ,''test source''
    ,getdate()
    ,''admin''
    ,getdate()
    ,''admin''
   )'
  end
  else
  begin
   set @sql = @sql +
   ',(
     right(REPLICATE(''0'',11) + cast(' + cast(@i as nvarchar) + ' as varchar),11)
    ,''username'' + right(REPLICATE(''0'',11) + cast(' + cast(@i as nvarchar) + ' as varchar),11)
    ,''test source''
    ,getdate()
    ,''admin''
    ,getdate()
    ,''admin''
   )'
  end

 

  if @t = 1000
  begin
   set @sql = @strInsert + @sql
   exec sp_executesql @sql
   set @sql = ''
   set @t = 1
  end
  else
  begin
   set @t = @t + 1
  end
  
  set @i = @i+1
 end
end
print 'end time' + cast(getdate() as nvarchar)

go

方案2:使用表變量，先把數據保存到表變量中，然後再insert select語句插入。

效率提高顯著，沒十萬條數據執行一次插入操作，平均7秒，插入10萬條。

 

 

create type dt as table
(
 PhoneNum  VARCHAR(100)
,name   VARCHAR(100) 
,source   VARCHAR(100) 
,CreateDate  datetime
,CreateUser  VARCHAR(100) 
,UpdateDate  datetime
,UpdateUser  VARCHAR(100) 
); 
GO 

 

select * from systypes

 

print 'begin time' + cast(getdate() as nvarchar)
declare @dt as dt
declare @i as bigint
set @i = 1

while (@i<=100000)
begin
 insert into @dt values
 (
  right(REPLICATE('0',10) + cast(@i as nvarchar),11),
  'username' +right(REPLICATE('0',10) + cast(@i as nvarchar),11),
  'test source',
  getdate(),
  'admin',
  getdate(),
  'admin'
 )
 set @i = @i + 1
end
insert into tblPhoneNum
select * from @dt
print 'end time' + cast(getdate() as nvarchar)