elias,
I would have to agree with Lawrence, and recommend re-designing your
database, unless there is a specific reason preventing you doing this (ie
like months of your life invested in the product  ; )

otherwise, only allowing numerical input is a good start tho :)

brad
> From: "elias" <[EMAIL PROTECTED]>
> Date: Wed, 25 Jul 2001 10:22:32 +0200
> To: [EMAIL PROTECTED]
> Subject: Re: [PHP] MySql number/string comparing ideas...
> 
> well yes,
> somehow my field has like:
> 
> field1
> ------
> 1.2
> 99.123
> 500x120
> 561x112
> 5.5
> 
> so as you see this 'field1' have both normal numeric values and sometimes
> 'YYYxYYY' values...
> I thought that MySql can somehow compare XXXX with another number YYYY and
> compare correctly YYYYxYYYY with anoter value just like it: ZZZZxZZZZ
> anyway...I just forgot about it and droped the YYYxYYY from my table and
> only allowed numerical input,
> 
> The problem is that I'm using the same field for two type of data storage...
> 
> "Brad Wright" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>> I would use something like this:
>> 
>> Select * from table where value1 < 500 AND value2 < 100
>> 
>> 
>> hope this helps,
>> brad
>> 
>>> From: "elias" <[EMAIL PROTECTED]>
>>> Date: Fri, 13 Jul 2001 07:06:26 -0700
>>> To: [EMAIL PROTECTED]
>>> Subject: [PHP] MySql number/string comparing ideas...
>>> 
>>> Hi!
>>> 
>>> How is it possible to do a MySql query for something like:
>>> 
>>> SELECT value from table WHERE value < '500x100'
>>> 
>>> should return all values that part1 must be less than 500 and part2 less
>>> than 100? like 499x99 and reject something like: 500x101
>>> 
>>> please give me suggestions!
>>> 
>>> 
>>> 
>>> 
>>> 
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>> 
> 
> 
> 
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