mysql - Compare a rows in a table for simularites and diffrences -

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i have issue need block bots on site , need list of there account block

question answer this. same account using different ip address @ same time. need simple table of account numbers can copy , paste security

if account number appears 2 or more times under different ip address @ same time show me account number.

here example of table working with.

 table temp1  account          ip            last_used    14k4chc     79.110.19.199   2016-01-07 09:06:52 17ffhqy     79.110.19.199   2016-01-07 09:06:52 14k4chc     91.215.136.75   2016-01-07 09:06:52 17ffhqy     91.215.136.75   2016-01-07 09:06:52 15lessr     193.9.158.98    2016-01-07 09:06:51

lines 1 thru 4 example of same 2 accounts using 2 different ip addresses @ same time spamming site , possible bot.

as starting point, identify different ip addresses same account , last_used time, use query this:

  select t.account        , t.last_used        , count(distinct t.ip) cnt_ip     temp1 t    group t.account, t.last_used   having count(distinct t.ip) > 1   order t.account, t.last_used

this more rows want return, since returns distinct values of last_used.

the group by collapses rows have same values specified expressions. in case, account , last_used.

the count(distinct ) gets number of unique ip addresses each collapsed group. if of ip addresses given account , last_used values non-null , equal, return value of 1. include having clause filter out rows have same ip address.

this query starting point. used inline view, or enhanced.


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