asked on

Remove records from mysql

Hi,

I have a voting poll database that received some really odd votes, the records show some very strange IPs.

4,546      Guest      455.513.414.406/24 /      April 2, 2012 @ 6:11 am
4,547      Guest      540.498.503.183/31 /      April 2, 2012 @ 6:11 am

A valid vote looks like this:

4,545      Guest      99.232.208.242 / ###.cable.rogers.com       April 2, 2012 @ 6:12 am

So i would like to run a sql query and search for all results that have these strange ip.

1) Can i run a sql command that will display the results of all strange IP addresses ?
2) Is there a REGEX sql command that that will search for invalid ip addresses ?
3) What would be the equiv. DELETE command to get rid of these queries.

Thaks,

ASKER CERTIFIED SOLUTION

awking00

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ifred

ASKER

1      pollip_id      int(10)
2      pollip_qid      varchar(10)
3      pollip_aid      varchar(10)
4      pollip_ip      varchar(100)
5      pollip_host      varchar(200)
6      pollip_timestamp      varchar(20
7      pollip_user      tinytext      utf8_general_ci
8      pollip_userid      int(10)

pollip_ip is the filed with the ip in question.

awking00

So, which if any or all of these values exist in the pollip_ip field?
4,546 Guest 455.513.414.406/24 / April 2, 2012 @ 6:11 am
4,547 Guest 540.498.503.183/31 / April 2, 2012 @ 6:11 am
4,545 Guest 99.232.208.242 / ###.cable.rogers.com April 2, 2012 @ 6:12 am

ifred

ASKER

455.513.414.406/24

and

540.498.503.183/31

and

99.232.208.242

Norie

Perhaps a stupid question, but assuming ###.cable.rogers.com is in the host field, is there always a host when the IP is valid?

SOLUTION

ifred

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Norie

So you mean you want to delete the records were the host field is empty?

Try this.

DELETE FROM `wp_pollsip` WHERE `poll_host` = '';

Or this.

DELETE FROM `wp_pollsip` WHERE `poll_host` is null;

ifred

ASKER

Not really. Every record has an ip, and i am wondering if one would know a SQL statement i could use that will return all fields where wp_pollsip contains an invalid IP address.
Unfortunately I am not that good with Regex expressions.

Norie

So do you want to delete records with invalid IPs or validate the existing IPs?

ifred

ASKER

i want to delete records with invalid IP addresses. Usually they have a number higher than 255 in at least one of the octets, those are REALLY invalid.

Norie

No problem, I was trying to do something with regexp but with no luck, so when you posted the table structure I just thought using the host field might work, wishful thinking I suppose.

ifred

ASKER

While it could be one of the way to do this, it is probably not the best way to do it.
Let's see if anybody else can help and thanks anyway.

awking00

455.513.414.406/24
and
540.498.503.183/31
and
99.232.208.242
So the first two are invalid why? Because they contain '/xx' at the end?
If that's the case, simply delete from wp_pollsip where instr(poll_ip,'/') >0

ifred

ASKER

The first two ones are invalid because these are not valid IP numbers, IP numbers are up to 255 in any octet.

Norie

An IP can't have something like /24 at the end either.

SOLUTION