fxuser Posted January 19, 2011 Share Posted January 19, 2011 hello, so i want to merge these 2 queries: $query1 = mysql_query("UPDATE act SET from='$new_un' WHERE to='$un_curr'"); $query2 = mysql_query("UPDATE act SET to='$new_un' WHERE from='$un_curr'"); how can i do it? edit : if im in a wrong section please move it. Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/ Share on other sites More sharing options...
mikosiko Posted January 19, 2011 Share Posted January 19, 2011 $query1 = mysql_query("UPDATE act SET `from`='$new_un', `to`='$new_un' WHERE `to`='$un_curr'"); notice also the usage of backtics for your fields "from" and "to"... both are MYSQL rserved words http://dev.mysql.com/doc/refman/5.1/en/reserved-words.html Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162031 Share on other sites More sharing options...
fxuser Posted January 19, 2011 Author Share Posted January 19, 2011 $query1 = mysql_query("UPDATE act SET `from`='$new_un', `to`='$new_un' WHERE `to`='$un_curr'"); notice also the usage of backtics for your fields "from" and "to"... both are MYSQL rserved words http://dev.mysql.com/doc/refman/5.1/en/reserved-words.html Thanks for the reply but the query doesnt seem to work.. so i have to add these backtics in all my queries?will check the link , thanks. Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162041 Share on other sites More sharing options...
Maq Posted January 19, 2011 Share Posted January 19, 2011 Thanks for the reply but the query doesnt seem to work.. so i have to add these backtics in all my queries?will check the link , thanks. What happens? Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162044 Share on other sites More sharing options...
fxuser Posted January 19, 2011 Author Share Posted January 19, 2011 Thanks for the reply but the query doesnt seem to work.. so i have to add these backtics in all my queries?will check the link , thanks. What happens? it sents from and to WHERE `to`='$un_curr' which is not what i want.. i want it to from='$new_un' WHERE to='$un_curr' and to='$new_un' WHERE from='$un_curr' would this work? $query1 = mysql_query("UPDATE act SET `from`='$new_un', `to`='$new_un' WHERE `to`='$un_curr',`from`='$un_curr'"); so basically the first `from`='$new_un' goes with -> WHERE `to`='$un_curr' and `to`='$new_un' goes with -> WHERE `from`='$un_curr' Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162067 Share on other sites More sharing options...
jdavidbakr Posted January 19, 2011 Share Posted January 19, 2011 I think you want $query1 = mysql_query("UPDATE act SET `from`='$new_un', `to`='$new_un' WHERE `to`='$un_curr' OR `from`='$un_curr'"); That will update both the 'from' and 'to' values on any row that has either 'to' or 'from' = $un_curr. If you only want to update 'from' where 'from' = $un_curr, and only update 'to' where 'to' = $un_curr, then you do have to do it in two separate queries. (Well, you _can_ do it in one, but let's just say it's a lot easier to do it in two) Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162079 Share on other sites More sharing options...
fxuser Posted January 19, 2011 Author Share Posted January 19, 2011 on my table there might be some to columns NULL so i just want to update the from from un_curr to new_un ... which causes problems... i can stick around with my 2 queries.. i dont wanna bother you much ... just want the merged query to do the same job as the 2 that i have on my first post. thanks. Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162083 Share on other sites More sharing options...
mikosiko Posted January 19, 2011 Share Posted January 19, 2011 @fxuser: my fault... I read your post incorrectly try this UPDATE act SET `from` = IF (`to` = '$un_curr', '$new_un', `from`), `to` = IF (`from` = '$un_curr', '$new_un', `to`); Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162089 Share on other sites More sharing options...
fxuser Posted January 20, 2011 Author Share Posted January 20, 2011 @fxuser: my fault... I read your post incorrectly try this UPDATE act SET `from` = IF (`to` = '$un_curr', '$new_un', `from`), `to` = IF (`from` = '$un_curr', '$new_un', `to`); that did the job: UPDATE act SET `from` = IF (`from` = '$un_curr', '$new_un', `from`), `to` = IF (`to` = '$un_curr', '$new_un', `to`); thanks. Link to comment https://forums.phpfreaks.com/topic/224971-update-with-2-sets/#findComment-1162412 Share on other sites More sharing options...
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