MySQL: ID of Last Record?

[The Hobo]

How can I retrieve the ID of the last record in my table?

[cpradio]

mysql_result("select id from tableName",mysql_numrows("select id from tableName") -1,"id");

That should do it.

[The Hobo]

Thanks, I'll give it a try.

[cpradio]

That will only work if you have id as the primary.

Also you may want to attempt:
$query = mysql_query("select id from tablename order by id desc");
mysql_result ($query,0,"id");

[The Hobo]

This works for me:


$q = "SELECT id FROM newsitems ORDER by id ASC LIMIT 1, 1";
$id = mysql_fetch_array(mysql_query($q));

echo $id[0];


Thanks for your help. :)

[cpradio]

btw, very nice site. It's definitely one for my bookmark's, you do have a typo though: "prever" should be "prefer" i believe. ;)

-Matt

[scoutt]

why don't use just use

LAST_INSERT_ID()

always contains the most recently generated AUTO_INCREMENT value, and is not reset between queries

or

mysql_insert_id()

Returns the ID generated for an AUTO_INCREMENT column by the previous query. Use this function after you have performed an INSERT query into a table that contains an AUTO_INCREMENT field.

[The Hobo]

But weeks could go by before the script is run again. So LAST_INSERT_ID() wouldn't work.