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>Colin Gillespie wrote:
>| Dear All,
>|
>| I have four tables linked together with FK. An example is,
>deleting an
>| id in one table, deletes 1,000,000 rows in all the others. However,
>| this operation takes 2-3mins (currently this more or less empties the
>database.)
>| Is this slow?
>
>Depends on what hardware you're using. It sounds like you've
>done the right thing so far. I assume you've run explain on
>the stuff involved to make sure it's actually using those indexes.
We're have a 2.4Ghz Xeon with 2GB RAM. I've ran explain on SELECT
queries and they use the indexes. So I presume that the delete would
also use them.
When I use cluster it takes the time down to a few seconds . Is this the
best way then?
Thanks again
Colin
