Ajay Patel - SunService wrote:
>I am a beginner at SQL and would appreciate any help with a simple
>query.
>
>I have two tables:
>
>host
>patch
>
>The host table contains details for a particular host (OS, cpus, memory, etc)
>and the patch table contains patches installed on that host.
>
>For example:
>
>Host:
>
>hostid hostname OS cpus memory
>8000abcd abacus 2.6 4 1024
>8001abce quark 2.8 1 512
>8008efd1 sharp 2.9 2 2048
>
>Patch:
>
>hostid patchnumber patchversion
>8000abcd 105181 31
>8000abcd 109201 01
>8000abcd 108701 15
>
>8001abce 108528 12
>8001abce 108655 10
>8001abce 106655 07
>.
>.
>.
>
>I am trying to write a query that would list all hosts that
>do not have a particular patch installed.
>
>TIA,
>Ajay
>
SELECT patch.hostid
FROM patch left join host
ON patch.hostid=host.hostid
WHERE patchnumber=109201 and host.hostid is NULL;
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