Re: Query regarding Bulk Import - Mailing list pgadmin-support

Hi Sim / Dheeman

DTS is designed for scripts that batch more complex tasks.  It is best
not to do any transformation if your aim is to achieve a bulk copy.
In my experience, T-SQL's Bulk Insert gives the best speed, at least for
a few 100 megabytes of Tab Delimited file, and I always copy the file
locally to the Server first.  It shouldn't really matter where you
trigger the BULK INSERT from.

Other tricks to consider are whether you can compress/abbreviate any
verbose fields before dumping them, and then recalculate the
uncompressed version after upload.  Be careful to be explicit about
dates when dumping to TEXT.
I tend to go with Floats printed in default format to save space rather
than fixing the decimal places - some rounding differences will be
unavoidable.

Best Regards,James

P.S.
Reference - (an excerpt from Microsoft's site about DTS)
Using Bulk Insert and bcp
=========================
The Bulk Insert task creates and executes the Transact-SQL BULK INSERT
statement. BULK INSERT, supported by the Microsoft OLE DB Provider for
SQL Server, is significantly faster than bcp or the data pump for
performing text file import operations. Therefore, if transformations
are not used, use the Bulk Insert task and achieve faster throughput.

See
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dtssql/
dts_usage_7703.asp


-----Original Message-----
From: pgadmin-support-owner@postgresql.org
[mailto:pgadmin-support-owner@postgresql.org] On Behalf Of Sim Zacks
Sent: 18 April 2005 09:26
To: Dheeman - Web Spiders India
Cc: pgadmin-support@postgresql.org
Subject: Re: [pgadmin-support] Query regarding Bulk Import

I'd use DTS

Thank You
Sim Zacks
CIO
CompuLab
04-829-0145 - Office
04-832-5251 - Fax

________________________________________________________________________
________


Hi,

I'm a new user of postgres. Earlier my database was sqlserver . now i
want
to perform BULK IMPORT of data from Sqlserver to Postgres. Can you
please
suggest what are the tools that might be used in this purpose. Just to
note
that the data size in Sqlserver is of size more than 10GB.




Thanks & Regards,

Dheeman Dutta

Application Developer



Web Spiders (India) Pvt. Ltd.
51B, Justice Chandra Madhav Road
Calcutta 700 020. India
Phone: 91.33.2474.3581 to 85
Fax: 91.33.2474.3500
http://www.webspiders.com/
(ISO 9001:2000 and IC 9700 Certified. Microsoft Gold Certified Partner)

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