MySQL

finding the largest numbers

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Join Date: Mar 2008

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severman

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finding the largest numbers

Oct 2nd, 2009

hi all
could any 1 help me out.
im trying to find the biggest id number in a db.
the problem is that the "ID" column is saved as "TEXT"(its important to me).
the language im using is PHP.
10x!

tried to use this but it didnt work

 Help with Code Tags 
 MySQL Syntax (Toggle Plain Text) 
$resultt = mysql_query("SELECT MAX(id) FROM object" , $conn);
$row = mysql_fetch_array($resultt);
$num=$row[maxnum];
$resultt = mysql_query("SELECT MAX(id) FROM object" , $conn);
$row = mysql_fetch_array($resultt);
$num=$row[maxnum];

[/code]

Last edited by severman; Oct 2nd, 2009 at 4:27 pm.

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Join Date: Apr 2005

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ShawnCplus ShawnCplus is offline

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Re: finding the largest numbers

Oct 2nd, 2009

A) Why is your ID field TEXT?
B)

 Help with Code Tags 
 sql Syntax (Toggle Plain Text) 
SELECT MAX(CAST(id AS DECIMAL)) as id FROM object
SELECT MAX(CAST(id AS DECIMAL)) as id FROM object

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Join Date: Mar 2008

Posts: 43

Reputation: severman is an unknown quantity at this point

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severman

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Re: finding the largest numbers

Oct 2nd, 2009

thanx man
i used it as a text because when i started i didnt want to give auto id, and its easier to work on string in php...
but now i do and instead of changing 20 pages i wanted to change the command...
anyway 10x!