how to free the memory occupied by "blob" in MS sql server

i'm working in microsoft sql server and i got following problem:

I have a text files Asia.txt in E:\ folder with some data in it as shown below

Asia.txt

1, Mizuho, Fukushima, Tokyo
2, Minika, Pang, Taipei
3, Jen, Ambelang, India
4, Jiang, Hong, Shangai
5, Ada, Koo, HongKong

And I have a table Region, in the database Companies, as shown below.

1>CREATE TABLE REGION (ID INT,REGION VARCHAR(25),DATA varbinary(MAX))
2>GO

I queried all the data from Asia.txt, using the OPENROWSET function.

1>INSERT INTO REGION (ID, REGION, DATA)
2>SELECT 1 AS ID, 'ASIA' AS REGION,
3> * FROM OPENROWSET( BULK 'E:\Asia.txt',SINGLE_BLOB)
4>AS MYTABLE
5>GO

it occupied some memory then i deleted this record using follwoing query

1>DELETE REGION
2>GO

then it deletes the record successfully but memory is not getting freed

can anyone help me out on this problem

When you delete from SQL server the memory will not be removed until the database is truncated. If you want to store data temporarily create a temporary table with a prefix of #

CREATE TABLE #TEMPTABLE|||

i want to remove one record from the table, and i did it by using "DELETE" statement with WHERE clause,

now i want to free memory which was occupied by recently deleted record.

what i know about TRUNCATE statement is that it deletes the whole table and we cannot use WHERE clause with TRUNCATE.

and i don't want to create temporary table.

so how can i use truncate?.

thanks for your suggestion

|||

Hi,

This problem make me concentrate to it ! I have the same problem, please read this article :

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=947545&SiteID=1

Althought I use temporary table, but, it does not free memory when I delete temp table, I do not know why ! For someone, they said that : "In AS, it free memory not well and Microsoft company does not anonounce this problem in a clear way !".

Can you tell me more,

Regards,

Tran Quang Phuong.