sql server 大資料量的insert、delete操作最佳化

經常使用的語句！

--大大量匯出orders表:insert

DBCC DROPCLEANBUFFERS

DBCC FREEPROCCACHE

go

SET NOCOUNT ON

BEGIN TRANSACTION

INSERT INTO test.dbo.orders with(tablock) SELECT * FROM

bak.dbo.Orders

WHERE ordertime BETWEEN '2010-05- 01' AND '2010-05-10'

COMMIT

go

--大大量匯出orders 表:delete

DBCC DROPCLEANBUFFERS

DBCC FREEPROCCACHE

go

SET NOCOUNT ON

BEGIN TRANSACTION

while 1=1

begin

delete top(1000) from test.dbo.orders with(tablock)

WHERE ordertime BETWEEN '2010-05-01' AND '2010-05-10'

if @@rowcount<1000

break

end

COMMIT

go

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