MySQL Forums :: Microsoft SQL Server :: IsNumeric() clause in MySQL??

Oops! Henri's does work fine. My enhancements then are the following:

* removing the space between the function name and the parentheses
* adding the size to the datatype: TINYINT(1)
* indicating that the function is deterministic: DETERMINISTIC
* replacing the range '{0,1}' with a '?'


CREATE FUNCTION ISNUMERIC(myVal VARCHAR(1024))
RETURNS TINYINT(1) DETERMINISTIC
RETURN myVal REGEXP '^(-|\\+)?([0-9]+\\.[0-9]*|[0-9]*\\.[0-9]+|[0-9]+)$';


Sorry for any confusion that my previous post may have caused.
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Cai Black



Edited 1 time(s). Last edit at 01/07/2009 11:42AM by Cai Black.