nbtree README: move VACUUM linear scan section.
Peter Geoghegan <pg@bowt.ie>
nbtree README: move VACUUM linear scan section. Discuss VACUUM's linear scan after discussion of tuple deletion by VACUUM, but before discussion of page deletion by VACUUM. This progression is a lot more natural. Also tweak the wording a little. It seems unnecessary to talk about how it worked prior to PostgreSQL 8.2.
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| src/backend/access/nbtree/README | modified | +28 −27 |