命令行MySQL脚本

Question

Been trying to figure out a few ways around this, and back to square 1.

My hosting package only apparently has supporting software for PHP, SendMail and Perl from the command line - but I need to figure out the best way to run an SQL script, whether it be from the command line as a MySQL script (if that's possible), or within a PHP or Perl script.

I have tried the following script within a PHP script, but the LOAD DATA LOCAL INFILE prevents it from running properly, so I'm stumped as to an easier solution... but at this stage I'll take any!

<?php
$con = mysqli_connect('xxx.xxx.xxx.xx', 'xxxx-xxxxxxx', 'xxxxxxxxx', 'xxxx-xxxxxxx');
mysqli_query($con, "LOAD DATA LOCAL INFILE 'http://www.mydomain.co.uk/datafeed.csv' REPLACE INTO TABLE product_feed FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n' IGNORE 1 ROWS");
mysqli_close($con);

Command lines are very new to me, and to be honest I only need to know as it's how I construct a schedule task/cron job for an update script.

Can anyone help me out

Answer 1

Where are you running this from? I presume www.mydomain.co.uk is your server, and you're accessing it from an external client?

The main difference between LOAD DATA and LOAD DATA LOCAL is that the latter copies a file from the client to a temporary file in the server before continuing as an ordinary LOAD DATA command using the copied file; but both the MySQL client and the server must have been built explicitly to enable it . Since it is a potential security hole I would doubt very much if the server has been built that way.

Neither will accept an HTTP URL -- you need to specify a path . If you use LOAD DATA specifying just a bare filename then the server will look for it in the default database directory ; or if it is a relative path with a directory component then the server treats it as being relative to the data directory ; absolute paths are, of course, used literally.

How you get this to work depends on which server directories you can write to that the MySQL server can also read. There is little to be gained from LOAD DATA LOCAL as you can copy the CSV file yourself and have more control over it. The most likely candidate is the data directory, and you can discover where that is using

SHOW VARIABLES WHERE Variable_Name = "datadir"

Then, if you put your file myfile.csv into this directory, you can use

LOAD DATA INFILE "./myfile.csv" ...

to get the server to load the table from your file.

I hope this helps.