So I have a script that runs daily. It creates a temp table then inserts the records to a table from the temp table. The script used to create indexes but few months ago I commented out the index creation. My question is, does the index still exist in the table? Will it still slow down the update, insert etc? I can see the index names in the index usage report.
closed as not a real question by Mark Storey-Smith, Paul White, RolandoMySQLDBA, Aaron Bertrand♦, dezso Feb 27 '13 at 7:35
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