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lemarsu

04-04-2003 01:18 PM

mass update of users Help...

I need to do a mass update of users based on some field in different tables

I have written some SQL but it would not work under mysql (in the office DB2 and oracle are ok with this kind of sql)

This is what I am trying to run :

Code:

UPDATE user,userfield

        SET user.usergroupid=8

        WHERE 

                userfield.userid=user.userid AND

                userfield.field8= 'United Kingdom' AND

                user.usergroupid='5'

Can anyone please help....

Thanks
LeMarsu

Xenon

04-04-2003 01:27 PM

hmm i don't know the update command very well, but maybe this will work:

[sql]UPDATE user LEFT JOIN userfield USING(userid) SET usergroupid=8 WHERE field8='United Kingodm' AND usergroupid=5[/sql]

lemarsu

04-04-2003 02:41 PM

that doesn't work as well !!

There is something in myphp I don't get ! I can only do simple update Queries !

I don't know where I read this but apparently you can do updates with joins in mySQL ... can that be true !!?

LeMarsu ... need HELP !!!

mr e	04-04-2003 03:11 PM

when it doesn't work, what happens? if you just copied xenons query exactly it had a spelling error at Kindom

lemarsu

04-04-2003 04:17 PM

this is the error I get :

Quote:

Error
SQL-query :

UPDATE
user
LEFT JOIN
userfield
USING(userid)
SET usergroupid=8
WHERE field8='United Kingdom' AND usergroupid=5

MySQL said:

You have an error in your SQL syntax near 'LEFT JOIN
userfield
USING(userid)
SET usergroupid=8
WHERE field8='United ' at line 3

lemarsu

04-06-2003 08:32 AM

I found this posts on the web...
http://www.geocrawler.com/archives/3...9/3/0/1441850/

Quote:

You can`t do a join in an update (or delete) statement. So you
have to select the rows you want to update in one query, then
join the selected IDs into a string separated by commas, then
update WHERE iparty_sku IN (<string of selected IDs>).

Xenon

04-06-2003 09:49 AM

that means you have to write a script which selects u the rows to update at first:

PHP Code:


		
			
<?php

require('./global.php');

$users=$DB_site->query("SELECT user.userid FROM user LEFT JOIN userfield USING (userid) WHERE user.usergroupid=5 AND userfield.field8='United Kingdom'");

$userids = '(0';

while($user=$DB_site->fetch_array($users)) {

$userids .= ','.$user['userid'];

}

$userids .= ')';

$DB_site->query('UPDATE user SET usergroupid=8 WHERE userid IN '.$userids);



?>

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