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我有以下情況: 我有一個SQL 2008 R2企業版,其中一個數據庫中啓用了TDE加密。其中一個來自加密數據庫的存儲過程使用了一個表變量(@ t1),該表使用近600,000條記錄進行填充。然後有一個select語句,它使用該表和另一個來自加密數據庫(t2)的表之間的連接,在t2表上我有大約20 mil的行。 這個連接需要永久完成(上次花費了將近4小時)。如果我使用表格變量而不是表格變量(#t3)並執行相同的連接,則結果是即時的。另外,如果我在另一臺沒有TDE加密的服務器(同樣的SQL 2008 R2)中運行這兩個表之間的連接,幾秒鐘內就可以完成連接。 因此,有沒有人遇到過使用TDE的表變量和加密數據庫的類似問題? 這是我如何加密數據庫:啓用TDE的SQL 2008 R2服務器上的表變量性能
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'AASFA234234234as234#234#$##$'
CREATE CERTIFICATE SQLCertificate
WITH SUBJECT = 'SQL Certificate',
EXPIRY_DATE = '10/31/2020';
USE DBTest
go
CREATE DATABASE ENCRYPTION KEY
WITH ALGORITHM = AES_256
ENCRYPTION BY SERVER CERTIFICATE SQLCertificate;
ALTER DATABASE DBTest
SET ENCRYPTION ON
And this is the script that I used where _rptHousehold is a table that has 18mil records. The script never gets to the PRINT '3 ' + CONVERT(VARCHAR,GETDATE(),121), hangs on the select count(*) from @tt
PRINT '1 ' + CONVERT(VARCHAR,GETDATE(),121)
IF object_id('tempdb..#tt') IS NOT NULL
DROP TABLE #tt
declare @tt table
( [id] int IDENTITY(1,1),
TableID DECIMAL(11,0),
AdvisorID INT,
idBuild INT,
Tablename sysname,
tCreatedate datetime,
ColumnName varchar(100),
Column_ID int,
qtyValue decimal(25,9),
tModifiedDate datetime
)
INSERT INTO @tt
(TableID , AdvisorID , idBuild,Tablename, tCreatedate,ColumnName, Column_ID,qtyValue)
select TOP 600000
t.object_ID
,AdvisorID
,1635
,t.NAME
,t.Create_date
,c.Name
,c.object_ID
,CAST(RAND()* 100000 AS DECIMAL(25,9))
FROM sys.tables t CROSS JOIN sys.columns c
CROSS JOIN (SELECT DISTINCT idAdvisor AS AdvisorID FROM dbo._rptHousehold WHERE idBuild = 1635) ac
PRINT '2 ' + CONVERT(VARCHAR,GETDATE(),121)
SELECT COUNT(*) FROM @tt
PRINT '3 ' + CONVERT(VARCHAR,GETDATE(),121)
UPDATE tt
SET
qtyValue = rp.qtyAvgPAAssets
FROM @tt tt
JOIN _rptHousehold rp
ON rp.idAdvisor= tt.AdvisorID
AND rp.idBuild= tt.idBuild
PRINT '4 ' + CONVERT(VARCHAR,GETDATE(),121)
好點,謝謝 – user1160835