Anbody know exactly how fast fresfresh works (i.e. if row by row)?

Hi there,
Anbody know exactly how fast fresfresh works (i.e. if row by row).
I've read on other sites that fast refresh works on a row-by-row-basis as opposed to set-based
Is ths true?
Many Thanks

Hi,
I do not think the processing is row by row…
You can check it for yourself – trace a session that issues a fast refresh and examine the trace file.
I did that exercise back on Oracle 8i, and got “insert as select “ statement (one statement, not a statement for every row!) that uses “MLOG$_” MV log table to retrieve the changed records.
Hope that helps,

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