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MySQL Update during CSV import question

开发者 https://www.devze.com 2022-12-21 23:28 出处:网络
Okay, so I have this CSV file of products and all the products have an ID number.I am going to import this CSV into an existing (empty) database table where the columns in the database are named the e

Okay, so I have this CSV file of products and all the products have an ID number. I am going to import this CSV into an existing (empty) database table where the columns in the database are named the exact same name as the first-row columns in the CSV file.

There is one extra column in the DB called URI. I need to build this during (or after is okay too) the import of the CSV file, based on info in the CSV file.

For e开发者_Go百科xample, I know the URI is going to start with-

http://foo.com/prodinfo.asp?number=

I need to append to basically build the URI and insert into that last field so that the URI looks like-

"http://foo.com/prodinfo.asp?number=" . $item_number . "&id=123456"

The first string and the last string will be the same every iteration, only the item_number will changed based on that column in the DB.

Now the question. I can easily write a PHP script to do the update for me, however, I don't know enough about MySQL to know whether it can be done during the import of the CSV or if there's some easy MySQL syntax I can run in SQLyog or something to do it without having to write/run a script each time?

Okay, I think that explains it, thanks!


Assuming your table is called table, the item_number column is called number, and that the URI column is called URI, you can issue the following SQL statement right after you are done importing the CSV:

UPDATE table SET URI=CONCAT('http://foo.com/prodinfo.asp?number=',number,'&id=123456');
COMMIT;

If you don't want to do this manually after each import, you can have MySQL run the statement automatically as part of a trigger.

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