Question

Importing HUGE CSV into MS SQL

Asked by: claydough

Hi,

I have a script that will allow a user to upload a CSV file and it will then parse it line by line and insert each field into an MSSQL DB.  This works flawlessly except when I feed it huge CSV files.  Right now I am locking the server up when I feed it an 11.3MB file that has about 176,000 rows with only 4 columns.

Does anyone have any suggestions as to how to get this CSV in MSSQL via a CF Script without hosing the server?   I thought of a DTS package, but I'm not sure how to go about doing that.  Any help is greatly appreciated.

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Asked On
2005-06-03 at 12:25:02ID21446307
Tags

csv

,

mssql

,

sql

,

import

Topic

ColdFusion Application Server

Participating Experts
2
Points
250
Comments
11

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Answers

 

by: mrichmonPosted on 2005-06-03 at 12:57:29ID: 14142774

DTS is a good idea - but why involve cold fusion at all???

Just go stringht from the CSV file into MSSQL.

In enterprise manager go to your database and righclick in the table section and choose Import Data.

Then follow the wizard to select the CSV file, and use an existing table (or create new) and set up the import.

No Cold Fusion interaction needed and way faster and more efficient.

 

by: claydoughPosted on 2005-06-03 at 13:05:14ID: 14142834

Ya, I would do that, but I need a web interface for users to drop these CSVs in.  

 

by: mrichmonPosted on 2005-06-03 at 13:09:38ID: 14142867

No matter what you do if you are transferring 11.3 MB file through the web (i.e. Users dropping in the CSVs) it is going to be slow...

 

by: INSDivision6Posted on 2005-06-03 at 18:25:22ID: 14144249

Use BULK INSERT statement from <cfquery>.  We do this kind of stuff every day.  It will take a few seconds to insert 176,000 rows.

 

by: claydoughPosted on 2005-06-03 at 18:28:00ID: 14144259

Good idea...but what about the processing it take to just parse through that many rows?  How many rows are you all doing?

 

by: INSDivision6Posted on 2005-06-03 at 18:38:22ID: 14144289

As I said, the entire process will take a few seconds.  We reload some stat data file every night: about 500,000 rows by 7 cols.  Total running time (excludes downloading, of course) is below 3 sec.

 

by: claydoughPosted on 2005-06-03 at 18:45:01ID: 14144312

You wouldn't want to share an example of that script here would you?

 

by: INSDivision6Posted on 2005-06-03 at 20:07:57ID: 14144477

If your are talking about insert procedure, it's just one SQL statment. Nothing fancy.  Look at T-SQL manual.  Examples are there.

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