Comments on: MySQL doesn’t have an is_numeric function! http://maryh.wordpress.com/2008/05/12/mysql-doesnt-have-an-is_numeric-function/ anything ... or ... everything Wed, 11 Nov 2009 12:13:53 +0000 http://wordpress.com/ hourly 1 By: Marc Palau http://maryh.wordpress.com/2008/05/12/mysql-doesnt-have-an-is_numeric-function/#comment-1624 Marc Palau Wed, 21 Oct 2009 10:10:57 +0000 http://maryh.wordpress.com/?p=41#comment-1624 I want to add to your comment that: CONVERT(field_value,SIGNED INTEGER)>0 in few cases return a cleaned string, for example: 1h becomes 1 299*123 becomes 299 see you! I want to add to your comment that:

CONVERT(field_value,SIGNED INTEGER)>0

in few cases return a cleaned string, for example:

1h becomes 1
299*123 becomes 299

see you!

]]> By: Marc Palau http://maryh.wordpress.com/2008/05/12/mysql-doesnt-have-an-is_numeric-function/#comment-1623 Marc Palau Wed, 21 Oct 2009 10:09:40 +0000 http://maryh.wordpress.com/?p=41#comment-1623 Hi! I use REGEXP to know if is numeric or not: WHERE FIELD NOT REGEXP '^[0-9]+$' ^: Start with [0-9]: Numbers +: any numbers (1 or more times) $: to the end regards! Marc Hi! I use REGEXP to know if is numeric or not:

WHERE FIELD NOT REGEXP ‘^[0-9]+$’

^: Start with
[0-9]: Numbers
+: any numbers (1 or more times)
$: to the end

regards!
Marc

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