Pretty much. There has been discussion about allowing index-only access
to
"frozen" tables, i.e. archive partitions. But it all sort of hinges on
someone implementing it and testing ....
Would be interesting as a parameter to set at index creation (ie. if you
know this table will have a lot of reads and few writes)... like create an
index on columns X,Y keeping data on columns X,Y and Z...
But in this case do you still need the table ?
Or even create a table type where the table and the index are one, like
an auto-clustered table...
I don't know if it would be used that often, though ;)
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TIP 8: explain analyze is your friend
