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Postgresql Query Help

  • 11-03-2012 04:39AM
    #1
    wandererz
    Registered Users, Registered Users 2 Posts: 2,900 ✭✭✭


    Hi,

    I have a postgresql query which i have managed to get functional as follows:

    select subtype as event_type, count(*) as totalnum
    from $log
    where $filter
    and action='client-authentication'
    and MAC='60:fb:42:d8:60:7e'
    group by event_type

    This gives me a count based on
    action='client-authentication'
    and specific MAC='60:fb:42:d8:60:7e'

    However i will have multiple MAC addresses and duplicates.
    How can i adapt the above query to show me entries with the MAC field populated and exclude duplicates.

    Have limited knowledge of SQL queries these days!

    Thanks in advance.


Comments

  • #2
    amen
    Registered Users, Registered Users 2 Posts: 2,781 ✭✭✭amen


    [PHP]
    select DISTINCT MAC,subtype as event_type, count(*) as totalnum
    from $log
    where $filter
    and action='client-authentication'
    group by MAC,event_type
    [/PHP]

    should do it for you but why would you want to exclude a duplicate MAC ?


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