Adam Witney <[EMAIL PROTECTED]> writes:
> I have a complex SQL query which requires the joining of 18 tables. There
> are only primary key indices on the table and at the moment it runs a little
> slow (30s or so) and so I am trying to optimise it.
> The output of EXPLAIN is a little confusing an
Hi,
I have a complex SQL query which requires the joining of 18 tables. There
are only primary key indices on the table and at the moment it runs a little
slow (30s or so) and so I am trying to optimise it.
The output of EXPLAIN is a little confusing and seems to vary from run to
run. Does the
