huaxin zhang <[EMAIL PROTECTED]> writes:
> One problem I found is that even if I specify to create a clustered index by
> "cluster idx_name on table_name", I still can not tell the optimizer that the
> index of "idx_name" is a clustered index with "index correlation" value as 1.0
> (traced from the cost_index() in costsize.c)
The next ANALYZE should figure that out.
regards, tom lane
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