Vladimir Begun wrote:
Tanel Poder wrote:
FFS will scan from index header block (note that index segment header and
index root block are different ones) up to segment high water mark using
multiblock reads and ignoring contents of root, branch, bitmap, extent
map,
freelist group blocks. Rows are returned as they've read from blocks,
thus
no order can be guaranteed.
"Rows are returned as they've read from blocks, thus no order can be
guaranteed."
Not rows, but blocks returned as is in order they being read. Keys (rows)
are ordered inside leaf blocks -- as you wrote above. So, inside the blocks
the order is consistent but blocks are 'mixed' whilst read.
Looks, like my text recognition engine got a glitch... ignore that
message, please.
--
Vladimir Begun
The statements and opinions expressed here are my own and
do not necessarily represent those of Oracle Corporation.
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Author: Vladimir Begun
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