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OR do I need to update them specifically. The situation is this: I have a table with 1.5 million rows and 90 columns. We have done a massive amount of cleanup on the data and I need to know if i should rebuild the indexes OR if they were already rebuilt during the UPDATE and INSERT operation on that table.
There are already up-to-date. When an update or insert (or delete) completes, then all constraints have been checked, indexes updated and triggers have run OK too. This includes indexed views on the tables.
This is Consistency in ACID:
Statistics are not updated until needed (which is query compile time) but this is irrelevant