BUT after clustering triples according to an index on att1:
select relname, relpages from pg_class ; relname | relpages ---------------------------------+---------- triples | 142 (8KB/buffer)
142 * 8 * 1024 = 1,163,264 Bytes
Is there any compression or what?
Yes, there is:
http://www.postgresql.org/docs/8.0/interactive/storage-toast.html
Chris
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